100+ accurate calculators & converters: mortgage, loan, tax, BMI, dates, units, currency and more.
Score is being calculated.
Free 401k calculator: project your balance at retirement from salary, contribution rate, employer match, raises and returns, with a year-by-year growth table. Web page: https://calcbright.com/401k-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| age | No | Current age (years) | |
| rate | No | Expected annual return (%) | |
| match | No | Employer match (%) e.g. 50% of what you contribute… | |
| raise | No | Annual salary increase (%) | |
| salary | No | Annual salary | |
| balance | No | Current 401(k) balance | |
| currency | No | Currency | USD |
| retireAge | No | Retirement age (years) | |
| matchLimit | No | …up to (% of pay) | |
| contribution | No | Your contribution (% of pay) |
Free age calculator: find your exact age in years, months, weeks and days from your date of birth, the day you were born and the countdown to your next birthday. Web page: https://calcbright.com/age-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| asOf | No | Age on date Leave empty to use today's date. (YYYY-MM-DD) | |
| birth | No | Date of birth (YYYY-MM-DD) | 1990-01-01 |
Free APR calculator: find the true annual percentage rate of a loan once origination and upfront fees are included, plus the monthly payment and total cost. Web page: https://calcbright.com/apr-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| fees | No | Upfront fees Origination, processing, points and other finance charges. | |
| rate | No | Interest rate (%) | |
| term | No | Loan term (months) | |
| amount | No | Loan amount | |
| currency | No | Currency | USD |
Free area calculator for rectangles, squares, triangles, circles, trapezoids, parallelograms and ellipses. Enter sizes to get the area and formula. Web page: https://calcbright.com/area-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| x | No | Length | |
| y | No | Width | |
| z | No | ||
| unit | No | Unit | m |
| shape | No | Shape | rectangle |
Free auto loan calculator: find your monthly car payment with sales tax, down payment and trade-in, plus total interest and a full amortization schedule. Web page: https://calcbright.com/auto-loan-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| tax | No | Sales tax (%) Charged on the price minus the trade-in. | |
| down | No | Down payment | |
| rate | No | Interest rate (APR) (%) | |
| term | No | Loan term (months) | |
| price | No | Vehicle price | |
| tradeIn | No | Trade-in value | |
| currency | No | Currency | USD |
Free average calculator: paste a list of numbers to get the mean, median, mode, range, count and sum instantly, with step-by-step working for each result. Web page: https://calcbright.com/average-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| numbers | No | Numbers Separate values with commas, spaces or new lines. | 4, 8, 15, 16, 23, 42 |
Free BMI calculator for adults in kg/cm or lb/ft. Get your Body Mass Index, healthy weight range, BMR and daily calories (TDEE) to lose, maintain or gain weight. Web page: https://calcbright.com/bmi-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| age | No | Age (years) | |
| sex | No | Sex | male |
| inch | No | (in) | |
| units | No | Units | metric |
| activity | No | Activity level | light |
Free BMR calculator: find your basal metabolic rate with the Mifflin–St Jeor, revised Harris–Benedict and Katch–McArdle equations, plus calories by activity. Web page: https://calcbright.com/bmr-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| age | No | Age (years) | |
| sex | No | Sex | male |
| inch | No | (in) | |
| units | No | Units | metric |
| bodyFat | No | Body fat (optional, for Katch–McArdle) (%) |
Free body fat calculator using the US Navy method: enter height, neck, waist and hip measurements to get your body fat %, ACE category, fat mass and lean mass. Web page: https://calcbright.com/body-fat-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| sex | No | Sex | male |
| inch | No | (in) | |
| hipCm | No | Hips (widest point) (cm) | |
| hipIn | No | Hips (widest point) (in) | |
| units | No | Units | metric |
| neckCm | No | Neck (below the larynx) (cm) | |
| neckIn | No | Neck (below the larynx) (in) | |
| waistCm | No | Waist (men: at navel · women: narrowest) (cm) | |
| waistIn | No | Waist (men: at navel · women: narrowest) (in) |
Free break-even calculator: enter fixed costs, price and variable cost per unit to find the break-even point in units and sales, plus the contribution margin. Web page: https://calcbright.com/break-even-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| fixed | No | Fixed costs (per period) Rent, salaries, insurance… | |
| price | No | Price per unit | |
| currency | No | Currency | USD |
| variable | No | Variable cost per unit Materials, packaging, commission… |
Free budget calculator using the 50/30/20 rule: split your monthly take-home pay into needs, wants and savings, or set your own percentages for a custom plan. Web page: https://calcbright.com/budget-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| income | No | Monthly take-home income After tax and deductions | |
| currency | No | Currency | USD |
| needsPct | No | Needs (%) | |
| wantsPct | No | Wants (%) Savings get whatever is left |
Free business days calculator: count working days (Monday–Friday) and weekend days between two dates, or add business days to a date to find a deadline. Web page: https://calcbright.com/business-days-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | End date (YYYY-MM-DD) | 2026-01-31 |
| days | No | Business days to add Use a negative number to go back in time. | |
| mode | No | What do you want to do? | count |
| start | No | Start date (YYYY-MM-DD) | 2026-01-01 |
Free CAGR calculator: find the compound annual growth rate between a beginning and ending value over any number of years, with total growth and a yearly path. Web page: https://calcbright.com/cagr-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | Ending value | |
| begin | No | Beginning value | |
| years | No | Number of years (years) | |
| currency | No | Currency | USD |
Free calorie deficit calculator: get your maintenance calories, a safe daily calorie target for your weekly weight-loss goal and the weeks to your goal weight. Web page: https://calcbright.com/calorie-deficit-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| age | No | Age (years) | |
| sex | No | Sex | male |
| inch | No | (in) | |
| rate | No | Weight loss per week (kg) | 0.5 |
| units | No | Units | metric |
| goalKg | No | Goal weight (kg) | |
| goalLb | No | Goal weight (lb) | |
| activity | No | Activity level | moderate |
Free calories burned calculator: estimate calories burned walking, running, cycling, swimming, lifting and 20+ other activities from MET values and your weight. Web page: https://calcbright.com/calories-burned-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| units | No | Units | metric |
| minutes | No | Duration (min) | |
| activity | No | Activity | run-6 |
Free car lease calculator: estimate your monthly lease payment from price, down payment, residual, money factor or APR, term and sales tax, fully itemised. Web page: https://calcbright.com/car-lease-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mf | No | Money factor APR ≈ money factor × 2,400 | |
| apr | No | APR (%) | |
| tax | No | Sales tax (%) Applied to the monthly payment, as in most US states | |
| down | No | Down payment & trade-in Capitalised cost reduction | |
| msrp | No | MSRP (sticker price) | |
| term | No | Lease term (months) | |
| price | No | Negotiated price Gross capitalised cost | |
| currency | No | Currency | USD |
| rateType | No | Interest given as | apr |
| residualPct | No | Residual value (% of MSRP) |
Free case converter: change text to UPPER CASE, lower case, Title Case, Sentence case, camelCase, snake_case or kebab-case instantly. Nothing is uploaded. Web page: https://calcbright.com/case-converter
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Convert to | title |
| text | No | Your text | the quick brown fox jumps over the lazy dog |
Free circle calculator: enter the radius, diameter, circumference or area of a circle and instantly get the other three values, with formulas and working shown. Web page: https://calcbright.com/circle-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| unit | No | Unit | none |
| known | No | I know the | radius |
| value | No | Radius (r) |
Free commission calculator: work out sales commission from the sale amount and rate, add an optional base salary and compare total earnings at other rates. Web page: https://calcbright.com/commission-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| base | No | Base salary (optional) For the same period as the sales | |
| rate | No | Commission rate (%) | |
| sales | No | Sale amount | |
| currency | No | Currency | USD |
Free compound interest calculator with monthly contributions. See how savings and investments grow year by year with daily, monthly or annual compounding. Web page: https://calcbright.com/compound-interest-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Annual interest rate (%) | |
| years | No | Years (years) | |
| initial | No | Initial deposit | |
| monthly | No | Monthly contribution | |
| currency | No | Currency | USD |
| compounding | No | Compounding | 12 |
Free concrete calculator for slabs, footings and round columns: get the volume in cubic yards and cubic meters plus how many 40, 60, 80 lb or 25 kg bags to buy. Web page: https://calcbright.com/concrete-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| qty | No | Quantity | |
| unit | No | Units | imperial |
| depth | No | Thickness (in) | |
| shape | No | Shape | slab |
| waste | No | Extra for waste / spillage (%) Many contractors add 5–10%. | |
| width | No | Width (ft) | |
| height | No | Height / depth (ft) | |
| length | No | Length (ft) | |
| diameter | No | Diameter (in) |
Free cooking converter: turn cups, tablespoons and teaspoons into grams or ounces for flour, sugar, butter, milk, oats, honey and more, with ingredient charts. Web page: https://calcbright.com/cooking-converter
| Name | Required | Description | Default |
|---|---|---|---|
| to | No | To | g |
| from | No | From | cups |
| amount | No | Amount | |
| ingredient | No | Ingredient | flour |
Free countdown calculator: see how many days, weeks and months are left until Christmas, New Year or any date you choose – or how many days have passed since. Web page: https://calcbright.com/countdown-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| from | No | Count from Leave empty to count from today. (YYYY-MM-DD) | |
| label | No | Event name (optional) | |
| preset | No | Count down to | christmas |
| target | No | Target date (YYYY-MM-DD) | 2027-01-01 |
Free credit card payoff calculator: see how many months it takes to clear your balance and the interest paid, or the payment needed to be debt-free by a date. Web page: https://calcbright.com/credit-card-payoff-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| apr | No | Interest rate (APR) (%) | |
| mode | No | I want to | payment |
| months | No | Pay off in (months) | |
| balance | No | Card balance | |
| payment | No | Monthly payment | |
| currency | No | Currency | USD |
Free currency converter with exchange rates updated every few hours. Convert USD, EUR, GBP, INR, PKR, AED and 30+ currencies with quick conversion tables. Web page: https://calcbright.com/currency-converter
| Name | Required | Description | Default |
|---|---|---|---|
| to | No | To | EUR |
| from | No | From | USD |
| amount | No | Amount |
Free date calculator: add or subtract days, weeks, months and years from any date to find the resulting date and weekday, with leap years handled. Web page: https://calcbright.com/date-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| op | No | Operation | add |
| days | No | Days | |
| start | No | Start date Leave empty to start from today. (YYYY-MM-DD) | |
| weeks | No | Weeks | |
| years | No | Years | |
| months | No | Months |
Free date difference calculator: count the days between two dates, plus weeks, months and years, business days and weekends, optionally including the end date. Web page: https://calcbright.com/date-difference-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | End date Leave empty to use today's date. (YYYY-MM-DD) | |
| start | No | Start date (YYYY-MM-DD) | 2026-01-01 |
| includeEnd | No | Include the end date? | no |
Free day of the week calculator: find the weekday any date falls on, past or future, with step-by-step Zeller’s congruence working and the Doomsday rule. Web page: https://calcbright.com/day-of-week-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | Date Leave empty to use today's date. (YYYY-MM-DD) | 1969-07-20 |
Free debt to income ratio calculator: add up your monthly debt payments, get your DTI percentage and compare it with the 36% and 43% limits lenders use. Web page: https://calcbright.com/debt-to-income-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| auto | No | Car loan payments | |
| cards | No | Credit card minimums | |
| other | No | Other debt payments Personal loans, child support, alimony, etc. | |
| income | No | Gross monthly income Before tax and deductions. | |
| housing | No | Rent or mortgage payment | |
| student | No | Student loan payments | |
| currency | No | Currency | USD |
Free discount calculator: find the sale price and how much you save for any percent off, including stacked discounts like an extra 10% off a sale price. Web page: https://calcbright.com/discount-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| extra | No | Extra discount (optional) (% off) Applied to the already-reduced price | |
| price | No | Original price | |
| currency | No | Currency | USD |
| discount | No | Discount (% off) |
Free dividend yield calculator: enter share price and dividend per share, paid yearly, quarterly or monthly, to get the yield and your annual income. Web page: https://calcbright.com/dividend-yield-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| price | No | Share price | |
| shares | No | Number of shares (optional) (shares) | |
| currency | No | Currency | USD |
| dividend | No | Dividend per share, per payment | |
| frequency | No | Paid | 4 |
Free down payment calculator: see the down payment and loan amount for any home price, whether you will pay PMI, and compare 3%, 5%, 10% and 20% down. Web page: https://calcbright.com/down-payment-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| price | No | Home price | |
| downPct | No | Down payment (%) | |
| currency | No | Currency | USD |
Free electricity cost calculator: find how many kWh an appliance uses and what it costs to run per day, month and year from its wattage, hours and your rate. Web page: https://calcbright.com/electricity-cost-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| days | No | Days used per month (days) | |
| hours | No | Hours used per day (h) | |
| price | No | Electricity price (per kWh) | |
| watts | No | Power rating (W) Check the label on the appliance or its charger. | |
| preset | No | Appliance | tv |
| currency | No | Currency | USD |
Free FD calculator: work out the maturity amount and interest on a bank fixed deposit with quarterly, monthly, half-yearly or yearly compounding. Web page: https://calcbright.com/fd-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Interest rate (% p.a.) | |
| years | No | Tenure (years) | |
| currency | No | Currency | INR |
| principal | No | Deposit amount | |
| compounding | No | Interest compounded | 4 |
Free flooring calculator: work out room area, add a waste allowance, and find how many boxes of laminate, vinyl, tile or hardwood to buy and what it will cost. Web page: https://calcbright.com/flooring-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| box | No | Coverage per box (sq ft) | |
| unit | No | Units | ft |
| price | No | Price per sq ft (optional) | |
| waste | No | Waste allowance (%) 10% for straight lay, 15% for diagonal or herringbone. | |
| width | No | Room width (ft) | |
| length | No | Room length (ft) | |
| currency | No | Currency | USD |
Free fraction calculator: add, subtract, multiply and divide fractions and mixed numbers. Get the simplified answer, mixed number, decimal and every step. Web page: https://calcbright.com/fraction-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | First fraction | 1/2 |
| b | No | Second fraction | 3/4 |
| op | No | Operation | add |
Free fuel cost calculator: estimate the gas cost of any one-way or round trip from distance, mpg or L/100 km and fuel price, and split it between passengers. Web page: https://calcbright.com/fuel-cost-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| price | No | Fuel price | |
| people | No | Split cost between (people) | |
| economy | No | Fuel economy | |
| currency | No | Currency | USD |
| distUnit | No | Distance unit | miles |
| distance | No | Trip distance (one way) | |
| econUnit | No | Economy unit | mpg |
| priceUnit | No | Price per | gallons |
| roundTrip | No | Round trip? | no |
Free fuel economy converter: convert between US mpg, UK mpg, liters per 100 km and km per liter in one step, with a handy mpg to L/100 km comparison chart. Web page: https://calcbright.com/fuel-economy-converter
| Name | Required | Description | Default |
|---|---|---|---|
| from | No | Unit | mpg-us |
| value | No | Fuel economy |
Free GPA calculator: enter letter grades and credit hours for up to 8 courses to get your semester GPA on a 4.0 scale, plus your new cumulative GPA in seconds. Web page: https://calcbright.com/gpa-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| c1 | No | Credits | |
| c2 | No | Credits | |
| c3 | No | Credits | |
| c4 | No | Credits | |
| c5 | No | Credits | |
| c6 | No | Credits | |
| c7 | No | Credits | |
| c8 | No | Credits | |
| g1 | No | Course 1 grade | A |
| g2 | No | Course 2 grade | B+ |
| g3 | No | Course 3 grade | A- |
| g4 | No | Course 4 grade | B |
| g5 | No | Course 5 grade | |
| g6 | No | Course 6 grade | |
| g7 | No | Course 7 grade | |
| g8 | No | Course 8 grade | |
| gpa0 | No | Current GPA | |
| credits0 | No | Credits completed |
Free final grade calculator: enter your current grade, the final exam weight and the grade you want to see exactly what score you need on the final exam. Web page: https://calcbright.com/grade-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| target | No | Grade you want (%) | |
| weight | No | Final exam weight (%) Share of the overall grade the final is worth. | |
| current | No | Current grade (%) |
Free GST calculator for India: add or remove GST at 5%, 12%, 18%, 28% or 40% and see the CGST, SGST or IGST split and invoice total in rupees instantly. Web page: https://calcbright.com/gst-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Calculation | add |
| rate | No | GST rate | 18 |
| amount | No | Amount excluding GST | |
| supply | No | Type of supply | intra |
| currency | No | Currency | INR |
Free heart rate zone calculator: find your max heart rate and 5 training zones by age with 220 − age or Tanaka, plus the Karvonen method using resting HR. Web page: https://calcbright.com/heart-rate-zone-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| age | No | Age (years) | |
| formula | No | Max heart rate formula | fox |
| resting | No | Resting heart rate (optional) (bpm) Add it to use the Karvonen (heart-rate reserve) method. |
Free height converter: change centimeters to feet and inches or feet and inches to cm instantly, with a handy height chart from 150 cm to 200 cm. Web page: https://calcbright.com/height-converter
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| feet | No | Feet (ft) | |
| mode | No | Convert | cm2ft |
| inches | No | Inches (in) |
Free home affordability calculator: see how much house you can afford from your income, debts and down payment using the 28/36 rule, with taxes and insurance. Web page: https://calcbright.com/home-affordability-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| dti | No | Total DTI limit (back-end) (%) | |
| down | No | Down payment | |
| rate | No | Mortgage rate (%) | |
| debts | No | Monthly debt payments Car, student, card minimums, etc. | |
| front | No | Housing ratio (front-end) (%) | |
| years | No | Loan term (years) | |
| income | No | Gross annual income | |
| currency | No | Currency | USD |
| insurance | No | Home insurance / year | |
| propertyTax | No | Property tax (% / yr) |
Free hours calculator and time card: enter start, end and break times for each day of the week to total work hours, decimal hours and pay at your hourly rate. Web page: https://calcbright.com/hours-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Hourly rate (optional) | |
| friEnd | No | End (HH:MM, 24-hour) | 17:30 |
| monEnd | No | End (HH:MM, 24-hour) | 17:30 |
| satEnd | No | End (HH:MM, 24-hour) | |
| sunEnd | No | End (HH:MM, 24-hour) | |
| thuEnd | No | End (HH:MM, 24-hour) | 17:30 |
| tueEnd | No | End (HH:MM, 24-hour) | 17:30 |
| wedEnd | No | End (HH:MM, 24-hour) | 17:30 |
| currency | No | Currency | USD |
| friBreak | No | Break (min) | |
| friStart | No | Friday start (HH:MM, 24-hour) | 09:00 |
| monBreak | No | Break (min) | |
| monStart | No | Monday start (HH:MM, 24-hour) | 09:00 |
| satBreak | No | Break (min) | |
| satStart | No | Saturday start (HH:MM, 24-hour) | |
| sunBreak | No | Break (min) | |
| sunStart | No | Sunday start (HH:MM, 24-hour) | |
| thuBreak | No | Break (min) | |
| thuStart | No | Thursday start (HH:MM, 24-hour) | 09:00 |
| tueBreak | No | Break (min) | |
| tueStart | No | Tuesday start (HH:MM, 24-hour) | 09:00 |
| wedBreak | No | Break (min) | |
| wedStart | No | Wednesday start (HH:MM, 24-hour) | 09:00 |
Free ideal weight calculator: find your ideal body weight for your height and sex using Robinson, Miller, Devine and Hamwi formulas plus a healthy BMI range. Web page: https://calcbright.com/ideal-weight-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| sex | No | Sex | male |
| inch | No | (in) | |
| units | No | Units | metric |
Free inflation calculator: see what an amount will cost in the future, what past money is worth today, and how much purchasing power inflation erodes each year. Web page: https://calcbright.com/inflation-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Average inflation rate (% / yr) Leave empty to use the latest official annual inflation for your currency’s country. | |
| years | No | Years ahead (years) | |
| amount | No | Amount | |
| currency | No | Currency | USD |
| direction | No | Calculate | future |
Free LCM and GCD calculator: find the least common multiple and greatest common divisor (GCF or HCF) of up to 20 numbers, with prime factorizations and steps. Web page: https://calcbright.com/lcm-gcd-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| numbers | No | Whole numbers 2 to 20 positive whole numbers, separated by commas or spaces. | 12, 18, 30 |
Free loan and EMI calculator for personal, car, home and student loans. Get your monthly installment, total interest and a month-by-month repayment schedule. Web page: https://calcbright.com/loan-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Interest rate (% per year) | |
| extra | No | Extra payment / month Optional prepayment added to every installment. | |
| years | No | Term (years) | |
| amount | No | Loan amount | |
| months | No | + months | |
| currency | No | Currency | USD |
Free logarithm calculator: find log base 10, natural log (ln), log base 2 or a log with any custom base, with the change-of-base formula worked step by step. Web page: https://calcbright.com/logarithm-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| x | No | Number (x) | |
| base | No | Base | 10 |
| custom | No | Custom base (b) |
Free macro calculator: get your daily calories and grams of protein, carbs and fat for weight loss, maintenance or muscle gain, with three diet-style splits. Web page: https://calcbright.com/macro-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cm | No | Height (cm) | |
| ft | No | Height (ft) | |
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| age | No | Age (years) | |
| sex | No | Sex | male |
| diet | No | Diet style | balanced |
| goal | No | Goal | maintain |
| inch | No | (in) | |
| units | No | Units | metric |
| activity | No | Activity level | moderate |
Free markup calculator: add a percentage markup to your cost to get the selling price, profit per unit and the gross margin it really gives you, at a glance. Web page: https://calcbright.com/markup-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cost | No | Cost | |
| markup | No | Markup (%) | |
| currency | No | Currency | USD |
Free mortgage calculator: estimate your monthly house payment with property tax, insurance, PMI and HOA, plus a full amortization schedule and extra-payment savings. Web page: https://calcbright.com/mortgage-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| hoa | No | HOA fees / month | |
| pmi | No | PMI rate (if down < 20%) (%) | |
| tax | No | Property tax / year | |
| down | No | Down payment (%) | |
| rate | No | Interest rate (%) | |
| extra | No | Extra payment / month Extra principal paid every month. | |
| price | No | Home price | |
| years | No | Loan term (years) | |
| currency | No | Currency | USD |
| insurance | No | Home insurance / year |
Free number base converter: convert between binary, octal, decimal, hexadecimal and any base from 2 to 36, with very large numbers and step-by-step working. Web page: https://calcbright.com/number-base-converter
| Name | Required | Description | Default |
|---|---|---|---|
| from | No | Input base | 10 |
| value | No | Number to convert | 255 |
| custom | No | Custom base Used for custom input and shown as an extra result. |
Free number to words converter: spell out any number up to 999 trillion in English, in check-writing format, or in the Indian lakh and crore system instantly. Web page: https://calcbright.com/number-to-words-converter
| Name | Required | Description | Default |
|---|---|---|---|
| unit | No | Currency for cheques | dollars |
| value | No | Number | 1234.45 |
| system | No | Numbering system | international |
Free one rep max calculator: estimate your 1RM for bench press, squat or deadlift from any weight and reps using the Epley, Brzycki and Lombardi formulas. Web page: https://calcbright.com/one-rep-max-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| reps | No | Reps completed (reps) Most accurate with 2–10 reps taken close to failure. | |
| unit | No | Unit | kg |
| weight | No | Weight lifted |
Free overtime calculator: enter your hourly rate, regular and overtime hours to see regular pay, time-and-a-half or double-time pay and total gross pay. Web page: https://calcbright.com/overtime-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Hourly rate | |
| regular | No | Regular hours (hrs) | |
| currency | No | Currency | USD |
| overtime | No | Overtime hours (hrs) | |
| multiplier | No | Overtime rate | 1.5 |
Free ovulation calculator: estimate your ovulation day, fertile window and next period from your last period and cycle length, with dates for the next 4 cycles. Web page: https://calcbright.com/ovulation-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | First day of your last period (YYYY-MM-DD) | 2026-10-01 |
| cycle | No | Average cycle length (days) | |
| luteal | No | Luteal phase length (days) Days from ovulation to your next period – 14 for most people. |
Free running pace calculator: get pace per km and per mile and speed from distance and time, or predict 5K, 10K, half marathon and marathon finish times. Web page: https://calcbright.com/pace-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| h | No | Time (h) | |
| m | No | (min) | |
| s | No | (s) | |
| pm | No | Pace (min) | |
| ps | No | (s) | |
| mode | No | Calculate | pace |
| preset | No | Distance | 10k |
| distUnit | No | Unit | km |
| distance | No | Custom distance | |
| paceUnit | No | Per | km |
Free paint calculator: enter your room size, doors, windows and coats to find the paintable wall area and how many gallons or liters to buy, rounded up. Web page: https://calcbright.com/paint-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| unit | No | Units | ft |
| coats | No | Coats | |
| doors | No | Doors | |
| width | No | Room width (ft) | |
| height | No | Wall height (ft) | |
| length | No | Room length (ft) | |
| ceiling | No | Paint the ceiling too? | no |
| windows | No | Windows | |
| coverage | No | Coverage (sq ft per gallon) Leave blank for a typical 350 sq ft per gallon (10 m² per liter). Check the paint can. |
Free strong password generator: create secure passwords of 8–64 characters with letters, numbers and symbols, plus entropy and strength. Made in your browser. Web page: https://calcbright.com/password-generator
| Name | Required | Description | Default |
|---|---|---|---|
| lower | No | Lowercase (a–z) | yes |
| upper | No | Uppercase (A–Z) | yes |
| digits | No | Numbers (0–9) | yes |
| length | No | Password length (characters) | |
| similar | No | Exclude look-alike characters (I l 1 | O 0 o) | no |
| symbols | No | Symbols (!@#…) | yes |
Free pay raise calculator: enter your salary or hourly wage and a raise % or new pay to see the increase, % change and pay per month, week and hour. Web page: https://calcbright.com/pay-raise-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| hours | No | Hours per week (hrs) Used to convert between hourly and annual pay (52 weeks) | |
| raise | No | Raise (%) | |
| method | No | Raise given as | percent |
| newPay | No | New annual salary | |
| current | No | Current annual salary | |
| payType | No | Pay is | annual |
| currency | No | Currency | USD |
Free percentage calculator: find X% of a number, what percent one number is of another, percentage change, increase and decrease – with step-by-step working. Web page: https://calcbright.com/percentage-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | Percent (X) | |
| b | No | Of number (Y) | |
| mode | No | Calculation | of |
Free percent error calculator: compare an experimental (measured) value with the theoretical (true) value to get percent, absolute and relative error. Web page: https://calcbright.com/percent-error-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| actual | No | Theoretical (true) value | |
| measured | No | Experimental (measured) value |
Free pregnancy due date calculator: estimate your due date from your last period, conception or IVF transfer date and see how many weeks pregnant you are today. Web page: https://calcbright.com/pregnancy-due-date-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | First day of last period (YYYY-MM-DD) | 2026-06-01 |
| cycle | No | Average cycle length (days) | |
| method | No | Calculate from | lmp |
Free prime number checker: test if any number up to one trillion is prime, see its smallest factor and prime factorization, and get the next and previous prime. Web page: https://calcbright.com/prime-number-checker
| Name | Required | Description | Default |
|---|---|---|---|
| n | No | Whole number Any whole number from 0 to 1,000,000,000,000. |
Free profit margin calculator: enter cost and revenue to get gross profit, margin percentage and markup, plus the selling price needed for any target margin. Web page: https://calcbright.com/profit-margin-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cost | No | Cost What the item or sale cost you | |
| revenue | No | Revenue (selling price) | |
| currency | No | Currency | USD |
Free protein calculator: find how many grams of protein you need a day for your weight and activity level, from the 0.8 g/kg RDA to 2.2 g/kg for muscle gain. Web page: https://calcbright.com/protein-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| level | No | Activity / goal | sedentary |
| units | No | Units | metric |
Free Pythagorean theorem calculator: find the hypotenuse or a missing leg of a right triangle from a² + b² = c², plus area, perimeter, angles and every step. Web page: https://calcbright.com/pythagorean-theorem-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | Leg a | |
| b | No | Leg b | |
| c | No | Hypotenuse c | |
| solve | No | Solve for | c |
Free quadratic equation solver: enter a, b and c to find the discriminant, real or complex roots and the vertex of ax² + bx + c = 0, with step-by-step working. Web page: https://calcbright.com/quadratic-equation-solver
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | a (x² coefficient) | |
| b | No | b (x coefficient) | |
| c | No | c (constant) |
Free random number generator: pick one or many random numbers in any range, whole or decimal, with or without duplicates. Numbers are generated in your browser. Web page: https://calcbright.com/random-number-generator
| Name | Required | Description | Default |
|---|---|---|---|
| max | No | Maximum | |
| min | No | Minimum | |
| kind | No | Type | integer |
| sort | No | Order | none |
| count | No | How many numbers | |
| unique | No | Allow duplicates? | no |
| decimals | No | Decimal places |
Free ratio calculator: solve A:B = C:D for any missing value, simplify ratios to lowest terms, and see the cross-multiplication steps. Ideal for recipes. Web page: https://calcbright.com/ratio-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | A | |
| b | No | B | |
| c | No | C | |
| d | No | D | |
| mode | No | Calculation | solve |
Free refinance calculator: compare your mortgage with a new rate and term to see the new payment, monthly savings, break-even month and lifetime interest. Web page: https://calcbright.com/refinance-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Current interest rate (%) | |
| balance | No | Current loan balance | |
| closing | No | Closing costs Paid upfront (not rolled into the loan). | |
| newRate | No | New interest rate (%) | |
| newTerm | No | New loan term (years) | |
| currency | No | Currency | USD |
| remaining | No | Years remaining (years) |
Free rent affordability calculator: see how much rent you can afford from your salary using the 30% rule and the landlord 40x rule, adjusted for your debts. Web page: https://calcbright.com/rent-affordability-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| debts | No | Monthly debt payments Car, student loan, card minimums. | |
| income | No | Gross income (before tax) | |
| period | No | Income is | year |
| currency | No | Currency | USD |
Free retirement calculator: project your nest egg at retirement from savings and monthly contributions, then see how long withdrawals will last, year by year. Web page: https://calcbright.com/retirement-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| age | No | Current age (years) | |
| rate | No | Expected return (before retiring) (%) | |
| years | No | Years in retirement (years) | |
| monthly | No | Monthly contribution | |
| savings | No | Current retirement savings | |
| currency | No | Currency | USD |
| retireAge | No | Retirement age (years) | |
| retireRate | No | Return during retirement (%) | |
| withdrawal | No | Monthly withdrawal in retirement |
Free ROI calculator: work out your return on investment as a percentage, net profit or loss, and annualized ROI based on how long the money was invested. Web page: https://calcbright.com/roi-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| years | No | Investment length (optional) (years) Needed for annualized ROI. | |
| currency | No | Currency | USD |
| invested | No | Amount invested | |
| returned | No | Amount returned (final value) |
Free Roman numeral converter: change any number from 1 to 3999 into Roman numerals or read a numeral back as a number, with a step-by-step breakdown. Web page: https://calcbright.com/roman-numeral-converter
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Convert | toRoman |
| roman | No | Roman numeral | MMXXVI |
| number | No | Number |
Convert hourly wage to annual salary and back. Free salary calculator for daily, weekly, bi-weekly, monthly and yearly pay, with optional take-home pay after tax. Web page: https://calcbright.com/salary-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| tax | No | Estimated tax rate (%) Optional: your approximate total tax & deduction rate. | |
| days | No | Days per week | |
| hours | No | Hours per week | |
| weeks | No | Paid weeks per year | |
| amount | No | Pay amount | |
| period | No | Per | hourly |
| currency | No | Currency | USD |
Free sales tax calculator: add sales tax to any price or work backwards from a tax-inclusive total to the pre-tax price, using any state or local rate. Web page: https://calcbright.com/sales-tax-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Calculation | add |
| rate | No | Your rate (optional) (%) Leave empty for the state/province rate, or enter your combined state + local rate. | |
| amount | No | Price before tax | |
| region | No | State / province | US-TX |
| currency | No | Currency | USD |
Free Saudi end of service benefit calculator: work out your award under Articles 84–85 of the KSA Labour Law, including the reduced amounts when you resign. Web page: https://calcbright.com/saudi-end-of-service-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | End date Leave empty to use today's date. (YYYY-MM-DD) | 2026-10-11 |
| wage | No | Last monthly wage Basic salary plus fixed allowances such as housing (as defined in your contract). | |
| start | No | Start date (YYYY-MM-DD) | 2019-01-01 |
| reason | No | How did employment end? | ended |
Free savings goal calculator: find out how much to save each month to reach a target amount by a deadline, counting current savings and interest earned. Web page: https://calcbright.com/savings-goal-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| goal | No | Savings goal | |
| rate | No | Annual interest / return (%) | |
| years | No | Time to reach goal (years) | |
| current | No | Already saved | |
| currency | No | Currency | USD |
Free shoe size converter: convert between US men's, US women's, UK, EU and Japanese cm sizes with a clear adult size chart, so online shoes fit the first time. Web page: https://calcbright.com/shoe-size-converter
| Name | Required | Description | Default |
|---|---|---|---|
| size | No | Size | |
| system | No | Size system | usM |
Free simple interest calculator: work out the interest and total amount on any principal using I = P × r × t, with time entered in years, months or days. Web page: https://calcbright.com/simple-interest-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Annual interest rate (% / yr) | |
| time | No | Time | |
| unit | No | Unit | years |
| currency | No | Currency | USD |
| principal | No | Principal |
Free SIP calculator: estimate the maturity value of a monthly mutual fund SIP, the amount invested and returns earned, with a year-by-year growth chart. Web page: https://calcbright.com/sip-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| rate | No | Expected annual return (%) | |
| years | No | Investment period (years) | |
| amount | No | Monthly SIP amount | |
| currency | No | Currency | INR |
Free sleep calculator: find the best time to go to bed or wake up using 90-minute sleep cycles, so you wake between cycles feeling refreshed, not groggy. Web page: https://calcbright.com/sleep-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | I want to… | wake |
| time | No | Wake-up time (HH:MM, 24-hour) | 07:00 |
| latency | No | Time to fall asleep (min) |
Free speed, distance and time calculator: solve for any one from the other two in km, miles, km/h or mph, with the formula and step-by-step working shown. Web page: https://calcbright.com/speed-distance-time-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Solve for | speed |
| hours | No | Time – hours | |
| speed | No | Speed | |
| minutes | No | Time – minutes | |
| distUnit | No | Distance unit | km |
| distance | No | Distance | |
| speedUnit | No | Speed unit | kmh |
Free square footage calculator for rectangles, L-shaped rooms, circles and triangles. Get the area in sq ft, m², square yards and acres, plus the total cost. Web page: https://calcbright.com/square-footage-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | Length (ft) | |
| b | No | Width (ft) | |
| c | No | Part 2 length (ft) | |
| d | No | Part 2 width (ft) | |
| unit | No | Units | ft |
| price | No | Price per sq ft (optional) | |
| shape | No | Shape | rectangle |
| currency | No | Currency | USD |
Free square root calculator: find the square root, cube root or any nth root of a number, simplify radicals like √72 = 6√2, and check the answer step by step. Web page: https://calcbright.com/square-root-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| n | No | Root (index) 2 = square root, 3 = cube root… | |
| x | No | Number |
Free standard deviation calculator: enter a data set to get the sample or population standard deviation, variance and mean, with a full step-by-step table. Web page: https://calcbright.com/standard-deviation-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| type | No | Data is a… | population |
| numbers | No | Data set Separate values with commas, spaces or new lines. | 2, 4, 4, 4, 5, 5, 7, 9 |
Free take-home pay calculator for the US, Canada, UK and Gulf: see your salary after income tax, Social Security, NI or CPP/EI – per year, month and paycheck. Web page: https://calcbright.com/take-home-pay-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| filing | No | Filing status | single |
| region | No | State | US-TX |
| salary | No | Gross annual salary | |
| social | No | Social insurance contribution (%) There is no personal income tax. Nationals pay social insurance (e.g. GOSI, GPSSA) – enter your rate if it applies. | |
| country | No | Country | US |
| provRate | No | Provincial income tax (effective) (%) Optional – provincial tax is added on top of federal tax, CPP and EI. | |
| otherRate | No | Effective income tax rate (%) | |
| stateRate | No | State income tax rate (%) Your state has progressive rates – enter your approximate effective state rate. | |
| retirement | No | 401(k) / pre-tax contributions (% of pay) |
Free time duration calculator: find the hours and minutes between two clock times, even across midnight, with the result in decimal hours and total minutes. Web page: https://calcbright.com/time-duration-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | End time An end time earlier than the start is treated as the next day. (HH:MM, 24-hour) | 17:45 |
| start | No | Start time (HH:MM, 24-hour) | 09:15 |
Free time to decimal converter: change hours, minutes and seconds into decimal hours for timesheets and payroll, or turn decimal hours back into h:mm:ss format. Web page: https://calcbright.com/time-to-decimal-converter
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Convert | toDecimal |
| hours | No | Hours | |
| decimal | No | Decimal hours (h) | |
| minutes | No | Minutes | |
| seconds | No | Seconds |
Free time zone converter: convert a date and time between any two cities, with daylight saving time handled automatically, plus a live world clock. Web page: https://calcbright.com/time-zone-converter
| Name | Required | Description | Default |
|---|---|---|---|
| to | No | To | Europe/London |
| from | No | From | America/New_York |
| when | No | Date & time Leave empty to use the current time. (YYYY-MM-DDTHH:MM) |
Free tip calculator: work out the tip and total for any bill, split it between friends, and compare 10%, 15%, 18%, 20% and 25% tips instantly. Web page: https://calcbright.com/tip-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| tip | No | Tip percentage (%) | |
| bill | No | Bill amount | |
| people | No | Split between (people) | |
| currency | No | Currency | USD |
Free UAE gratuity calculator under the new Labour Law: work out your end-of-service benefit from basic salary and service dates – 21 or 30 days per year. Web page: https://calcbright.com/uae-gratuity-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| end | No | Last working day Leave empty to use today's date. (YYYY-MM-DD) | 2026-10-11 |
| basic | No | Last basic monthly salary Basic salary only – excluding housing, transport and other allowances. | |
| start | No | Joining date (YYYY-MM-DD) | 2019-01-01 |
| unpaid | No | Unpaid leave days (days) Days of unpaid absence are excluded from service. |
Free unit converter for length, weight, temperature, volume, area, speed, time, data, energy and pressure. Metric ↔ imperial with exact formulas and tables. Web page: https://calcbright.com/unit-converter
| Name | Required | Description | Default |
|---|---|---|---|
| to | No | To | inches |
| from | No | From | cm |
| value | No | Value |
Free Unix timestamp converter: turn epoch seconds or milliseconds into a readable UTC date and ISO 8601 time, or convert any date and time to a Unix timestamp. Web page: https://calcbright.com/unix-timestamp-converter
| Name | Required | Description | Default |
|---|---|---|---|
| dt | No | Date and time (UTC) Empty = now. (YYYY-MM-DDTHH:MM) | |
| ts | No | Unix timestamp Seconds or milliseconds – detected automatically. Empty = now. | |
| mode | No | Convert | toDate |
Free VAT calculator: add VAT to a net price or remove VAT from a gross amount at 20% or any rate, with UK, EU, UAE and Saudi standard rates compared. Web page: https://calcbright.com/vat-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| mode | No | Calculation | add |
| rate | No | Other rate (optional) (%) Leave empty for the country’s standard rate, or enter a reduced rate. | |
| amount | No | Net amount (excl. VAT) | |
| country | No | Country | GB |
| currency | No | Currency | GBP |
Free volume calculator for cubes, boxes, cylinders, spheres, cones and pyramids. Enter dimensions to get the volume with its formula, plus litres and gallons. Web page: https://calcbright.com/volume-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| x | No | Length | |
| y | No | Width | |
| z | No | Height | |
| unit | No | Unit | cm |
| shape | No | Shape | box |
Free water intake calculator: find how much water you should drink each day in litres, cups and ounces based on your body weight, daily exercise and climate. Web page: https://calcbright.com/water-intake-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| kg | No | Weight (kg) | |
| lb | No | Weight (lb) | |
| units | No | Units | metric |
| climate | No | Climate | temperate |
| minutes | No | Exercise per day (min) |
Free week number calculator: find the ISO 8601 week number of any date, the Monday and Sunday of that week, the day of the year and the days left in the year. Web page: https://calcbright.com/week-number-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | Date Leave empty to use today's date. (YYYY-MM-DD) |
Free word counter: count words, characters with and without spaces, sentences and paragraphs, plus reading time, speaking time and your top keywords. Web page: https://calcbright.com/word-counter
| Name | Required | Description | Default |
|---|---|---|---|
| text | No | Your text | Paste or type your text here. The counter updates words, characters, sentences and paragraphs. It also estimates reading time and speaking time, and lists the keywords you use most often. |
Free zakat calculator: add up cash, gold, silver, investments and business assets, deduct debts due and check the gold or silver nisab for the 2.5% zakat due. Web page: https://calcbright.com/zakat-calculator
| Name | Required | Description | Default |
|---|---|---|---|
| cash | No | Cash & bank balances At home, in accounts and wallets | |
| gold | No | Value of gold Market value of gold you own | |
| basis | No | Nisab basis | silver |
| debts | No | Debts & bills due now Immediate liabilities only – not the full balance of long-term loans | |
| silver | No | Value of silver | |
| business | No | Business assets Stock for sale and business cash | |
| currency | No | Currency | USD |
| goldPrice | No | Gold price per gram (24k) Leave empty to use today’s live market price, or type your local price. | |
| investments | No | Investments & shares Market value of shares, funds, crypto | |
| receivables | No | Money owed to you Loans you expect to be repaid | |
| silverPrice | No | Silver price per gram Leave empty to use today’s live market price, or type your local price. |
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401k_calculatorage_calculatorapr_calculatorarea_calculatorauto_loan_calculatoraverage_calculatorbmi_calculatorbmr_calculatorbody_fat_calculatorbreak_even_calculatorbudget_calculatorbusiness_days_calculatorcagr_calculatorcalorie_deficit_calculatorcalories_burned_calculatorcar_lease_calculatorcase_convertercircle_calculatorcommission_calculatorcompound_interest_calculatorconcrete_calculatorcooking_convertercountdown_calculatorcredit_card_payoff_calculatorcurrency_converterdate_calculatordate_difference_calculatorday_of_week_calculatordebt_to_income_calculatordiscount_calculatordividend_yield_calculatordown_payment_calculatorelectricity_cost_calculatorfd_calculatorflooring_calculatorfraction_calculatorfuel_cost_calculatorfuel_economy_convertergpa_calculatorgrade_calculatorgst_calculatorheart_rate_zone_calculatorheight_converterhome_affordability_calculatorhours_calculatorideal_weight_calculatorinflation_calculatorlcm_gcd_calculatorloan_calculatorlogarithm_calculatormacro_calculatormarkup_calculatormortgage_calculatornumber_base_converternumber_to_words_converterone_rep_max_calculatorovertime_calculatorovulation_calculatorpace_calculatorpaint_calculatorpassword_generatorpay_raise_calculatorpercent_error_calculatorpercentage_calculatorpregnancy_due_date_calculatorprime_number_checkerprofit_margin_calculatorprotein_calculatorpythagorean_theorem_calculatorquadratic_equation_solverrandom_number_generatorratio_calculatorrefinance_calculatorrent_affordability_calculatorretirement_calculatorroi_calculatorroman_numeral_convertersalary_calculatorsales_tax_calculatorsaudi_end_of_service_calculatorsavings_goal_calculatorshoe_size_convertersimple_interest_calculatorsip_calculatorsleep_calculatorspeed_distance_time_calculatorsquare_footage_calculatorsquare_root_calculatorstandard_deviation_calculatortake_home_pay_calculatortime_duration_calculatortime_to_decimal_convertertime_zone_convertertip_calculatoruae_gratuity_calculatorunit_converterunix_timestamp_convertervat_calculatorvolume_calculatorwater_intake_calculatorweek_number_calculatorword_counterzakat_calculator140+ calculators and data tools — finance, health, science, global comparisons and more.
90+ pure finance calculators: loans, investing, bonds, options, tax. Stateless, stores nothing.
Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.
Loan & mortgage calculator, compound interest, ROI, crypto prices, FX conversion for AI agents.
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