# Calculator.com

> Free online calculators and converters for mathematics, finance, science, health, time, measurement, and everyday problem solving.

Generated: 2026-09-17T07:47:01Z
Build ID: 65bae647-2c9a-4b57-9c21-245aa9fbaf0b

This is the complete machine-readable public-content index for Calculator.com.

## Public pages

- [...calculate anything, anytime, anywhere.](https://calculator.com/): For 30 years (1996–2026), we’ve been providing free online calculators to millions of people around the world. From our very first calculators in 1996 to today’s growing collection, our goal has remained the same: to make calculations simple, accurate, and accessible to everyone.New calculators and improvements are added regularly, so check back oft...
- [About calculator.com](https://calculator.com/about/): Since January 1996, Calculator.com has had a simple mission: make useful calculators available to everyone, free and easy to use.Over the years we’ve built calculators for students, professionals, homeowners, travelers, hobbyists, and anyone with a question that can be answered with a little math. Some calculators solve serious problems, some save time,...
- [Contact Us](https://calculator.com/contact/): Calculator.com105 Lambert Rd.Thompson, CT 06277United StatesTel. 1 (860) 377-7633
- [Calculator Directory](https://calculator.com/directory/)
- [Privacy Statement](https://calculator.com/privacy/): At Calculator.com, we respect your privacy and believe in collecting only the information needed to operate and improve our website. Since 1996, our goal has been to provide useful online calculators that are free, fast, and easy to use. This Privacy Statement explains what information we collect, how we use it, and the choices available to you.
- [Terms of Service](https://calculator.com/terms/): By accessing or using Calculator.com, you agree to these Terms of Service. If you do not agree with these terms, please do not use the website.Use of Calculator.comCalculator.com provides online calculators, informational content, and related services for personal, educational, and business use.You agree to use the website only for lawful purposes and in ...

## Calculator categories

- [Automotive Calculators](https://calculator.com/directory/automotive/): Calculators for fuel economy, speed, horsepower, vehicles, boats, and other automotive-related estimates.
- [Computing Calculators](https://calculator.com/directory/computing/): Calculators for data, downloads, computer storage, and other computing tasks.
- [Conversion Calculators](https://calculator.com/directory/converters/): Convert currencies, temperatures, measurements, data sizes, and other units.
- [Date & Time Calculators](https://calculator.com/directory/date-time/): Calculators for calendar dates, elapsed days, countdowns, age, business days, and time durations.
- [Financial Calculators](https://calculator.com/directory/financial/): Calculators for mortgages, loans, leases, savings, investments, retirement, and other financial decisions.
- [Fun Calculators](https://calculator.com/directory/fun/): Lighthearted calculators for dates, compatibility, signs, and other fun uses.
- [Health & Fitness Calculators](https://calculator.com/directory/health-fitness/): Calculators for body measurements, calories, pregnancy dates, and other health-related estimates.
- [Math Calculators](https://calculator.com/directory/math/): Calculators for percentages, equations, geometry, trigonometry, prime numbers, and other math problems.
- [Other Calculators](https://calculator.com/directory/other/): Useful calculators that do not fit neatly into the main categories.
- [Sports & Hobbies Calculators](https://calculator.com/directory/sports-hobbies/): Calculators for vehicles, sports, hobbies, speed, power, and related activities.
- [Weather Calculators](https://calculator.com/directory/weather/): Calculators for weather, atmosphere, wind chill, and related atmospheric estimates.

## Calculators

- [Ad Calculator](https://calculator.com/calculate/ad/): Selling ad banners has just got easier! Just enter two of the three fields of information, such as the total cost, CPM (cost per thousand impressions), and exposures (number of ads shown), and the calculator will solve the last field for you.
- [Advanced Scientific Calculator](https://calculator.com/calculate/scientific/): Use this advanced scientific calculator for arithmetic, trigonometry, statistics, matrices, constants, and complex mathematical expressions.
- [Airport Calculator](https://calculator.com/calculate/airport/): This useful calculator will tell you the degrees, Nautical Miles, Statute Miles, and Kilometers between your originating and destination airports. It has a built-in database of over 150 of the most travelled airports!
- [Angle Converter](https://calculator.com/calculate/angle-converter/): Convert between degrees, radians, turns, arcminutes, arcseconds, gradians, angular mils, and other angle units.
- [Area Converter](https://calculator.com/calculate/area-converter/): Convert between metric, imperial, land, and scientific area units.
- [Armor Penetration Calculator](https://calculator.com/calculate/armor-penetration/): This calculator allows you to figure armor penetration.
- [Astrological Signs Calculator](https://calculator.com/calculate/astrology/): Find out your Western Sun Sign, and your Eastern or Chinese Sign.
- [Atmosphere Calculator](https://calculator.com/calculate/atmosphere/): Calculate standard-atmosphere properties from altitude, speed, and reference length.
- [BAC Calculator](https://calculator.com/calculate/bac/): This calculator allows you to calculate blood alcohol content (BAC) based on the quantity of beverages consumed, the alcohol percentage in each drink, the weight of the person, and the time spent consuming the drink.
- [Body Mass Index Calculator](https://calculator.com/calculate/bodymass/): This calculator allows you to calculate your Body Mass Index (BMI). Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. Find out your BMI and what it means for your health.
- [Bond Valuation](https://calculator.com/calculate/bond/): The purpose of this calculator is to provide calculations and details for bond valuation problems. It is assumed that all bonds pay interest semi-annually. Future versions of this calculator will allow for different interest frequency.
- [Calories Calculator](https://calculator.com/calculate/calories/): This calculator allows you to figure out how many calories you have burned.
- [Car Lease](https://calculator.com/calculate/lease/): This calculator lets you calculate your estimated lease payments.
- [College Savings Goal Calculator](https://calculator.com/calculate/college-savings/): Calculate the monthly or annual contribution needed to meet a college savings goal.
- [College Savings Projection Calculator](https://calculator.com/calculate/college-fund/): Project what your current college savings plan may cover and estimate any funding gap.
- [Color Calculator](https://calculator.com/calculate/color/): Convert colors between Hex, RGB, HSL, HSV, and CMYK, and view complementary and inverted colors.
- [Compact Scientific Calculator](https://calculator.com/calculate/compact-scientific/): Use this compact scientific calculator for arithmetic, trigonometry, logarithms, powers, roots, fractions, and other scientific calculations.
- [Cosine Calculator](https://calculator.com/calculate/cosine/): Enter the adjacent and hypotenuse angle values and this calculator will solve the cosine angle for you.
- [Cricket Chirp Temperature Calculator](https://calculator.com/calculate/cricket-chirp-temperature/): Estimate the outdoor temperature from cricket chirps counted during 25 seconds.
- [Currency calculator](https://calculator.com/calculate/currency/): Currency calculator allows you to convert between currencies. Exchange between dollars, pounds, euro, yen, yuan, and many more.
- [Data Size Calculator](https://calculator.com/calculate/data-size/): This calculator allows you to calculate data size in bits, nibbles, bytes, kilobytes, megabytes, gigabytes, and terabytes.
- [Days Between Dates Calculator](https://calculator.com/calculate/days-between/): Calculate the exact number of calendar days between two dates. Enter a start date and an end date, and the result updates automatically.
- [Days until Christmas](https://calculator.com/calculate/christmas/): Use this calculator to find out how many days are left until Christmas.
- [Density Converter](https://calculator.com/calculate/density-converter/): Convert between kilograms per cubic meter, grams per cubic centimeter, grams per milliliter, pounds per cubic foot, and other density units.
- [Download Calculator](https://calculator.com/calculate/download/): This calculator allows you to estimate how long it will take to download a file at any of a number of modem speeds. Try it out!
- [Energy Converter](https://calculator.com/calculate/energy-converter/): Convert between joules, calories, kilocalories, watt-hours, kilowatt-hours, BTU, electronvolts, and other energy units.
- [Final Grade Calculator](https://calculator.com/calculate/final-grade/): Calculate the exam score needed for a target grade or project a final course grade.
- [Final Grade Projection Calculator](https://calculator.com/calculate/final-grade-projection/): Project a final course grade from the current grade, final exam weight, and expected exam score.
- [Flow Rate Converter](https://calculator.com/calculate/flow-rate-converter/): Convert between liters per minute, gallons per minute, cubic feet per minute, cubic meters per second, and other flow-rate units.
- [Force Converter](https://calculator.com/calculate/force-converter/): Convert between newtons, kilonewtons, pound-force, kilogram-force, dynes, kip, and other force units.
- [Fractions Calculator](https://calculator.com/calculate/fractions/): Use this fractions calculator for fraction and decimal arithmetic with a running calculation tape.
- [Frequency Converter](https://calculator.com/calculate/frequency-converter/): Convert between hertz, kilohertz, megahertz, gigahertz, terahertz, cycles per second, and rpm.
- [Fuel Economy Converter](https://calculator.com/calculate/fuel-economy-converter/): Convert between miles per gallon, kilometers per liter, liters per 100 kilometers, and other fuel economy units.
- [GPA Calculator](https://calculator.com/calculate/gpa/): Calculate semester and cumulative GPA from letter or numeric grades and course credits.
- [Grade Calculator](https://calculator.com/calculate/grade/): Calculate an overall course grade using points or weighted categories.
- [Graphing Calculator](https://calculator.com/calculate/graphing/): Graph explicit functions of x with a simple responsive graphing calculator.
- [Group Work Calculator](https://calculator.com/calculate/group-work/): Ever had to work with another person to complete a task? This calculator will tell you how long it would take two people to complete the task if you know how long it would take each person to complete the task individually.
- [High Performance Bass Fishing Boat Speed Calculator](https://calculator.com/calculate/bass-boat-speed/): This calculator allows you to calculate a bass fishing boat's speed.
- [Home Equity Calculator](https://calculator.com/calculate/equity/): Use this home equity calculator to estimate how much equity you may have in your home after subtracting mortgage and loan balances. Enter your home’s current value and any outstanding balances to see estimated available equity at 80%, 100%, and 125% of home value.
- [Horsepower Calculator](https://calculator.com/calculate/horsepower/): This calculator allows you to find out your vehicle's horsepower.
- [How long until you are a millionaire?](https://calculator.com/calculate/millionaire/): This calculator allows you to calculate how long it will take until you reach your desired account balance.
- [How much house can I afford?](https://calculator.com/calculate/how-much-house/): This calculator allows you to calculate the amount you can afford to pay for a mortgage.
- [IRA/401(k)/403(b) Retirement Calculation](https://calculator.com/calculate/retirement/): Find out how much to put away tax deferred to get a certain amount of money in the future, and how much you could expect to draw out of that money. Just put in some numbers to see!
- [Length Adding Calculator](https://calculator.com/calculate/feetinches/): The Length Adding calculator allows you to add feet and inches.
- [Length Converter](https://calculator.com/calculate/length-converter/): Convert between metric, imperial, nautical, astronomical, typographic, and other length units.
- [Loan calculator](https://calculator.com/calculate/loan/): Easily calculate the payments and interest amount on a loan based on the principal amount, annual interest and the number of payments with the free Loan calculator.
- [Loan Comparison](https://calculator.com/calculate/loan-comparison/): Compare two fixed-rate loan scenarios, including monthly payments, total interest, total cost, closing costs, and a simple closing-cost recovery estimate.
- [Loan Length Calculator](https://calculator.com/calculate/loan-length/): Enter how much you want to spend each month, an interest rate, and a loan amount and the calculator tells you how long it will take you to pay it off!
- [Love calculator](https://calculator.com/calculate/love/): Are you in love and want to know if it could be a good match? Calculate your chances of a successful relationship based on your first names with the free Love calculator!
- [Love Compatibility Calculator](https://calculator.com/calculate/love-compatibility/): To find out what the chances for you and your dream partner are, just fill in your and his or her Info and click Calculate.
- [Miles per Gallon Calculator](https://calculator.com/calculate/miles-per-gallon/): This calculator allows you to compute the miles per gallon of your car via the miles travelled and the number of gallons used. Also, if you enter the cost per gallon and how many miles you drive a day, it will estimate your monthly and yearly gas expenses.
- [Miles per Hour Calculator](https://calculator.com/calculate/mph/): This calculator allows you to calculate miles per hour.
- [Money Counter](https://calculator.com/calculate/money/): This calculator allows you to calculate the total amount of money you have, just enter the number of bills and coins.
- [Mortgage Payment](https://calculator.com/calculate/mortgage/): The Mortgage Payment Calculator allows you to calculate monthly payments, average monthly interest, total interest, and total payment.
- [Mortgage Qualification Calculator](https://calculator.com/calculate/mortgage-qualification/): This calculator will try to calculate what kind of income lenders will expect you to be making to qualify for the specific values.
- [Percentage Calculator](https://calculator.com/calculate/percentage/): The percentage calculator allows you to find out what the amount, the percentage, the percent amount, the percent increase or the percent decrease is, if you know any of the two.
- [Perches to Square Meters and Square Feet Calculator](https://calculator.com/calculate/perches/): Online Perches to Square Meters and Square Feet Calculator.
- [Phone Number Converter](https://calculator.com/calculate/phone-number/): Have you ever wondered if your phone number has a memorable text equivalent, like 555-HELP? Just type it in and this calculator will generate all possible combinations, just pick your favourite one and tell the world how to reach you.
- [Power Converter](https://calculator.com/calculate/power-converter/): Convert between watts, kilowatts, megawatts, horsepower variants, BTU per hour, foot-pounds per second, and other power units.
- [Pregnancy Calculator](https://calculator.com/calculate/pregnancy-due-date/): This calculator allows you to calculate your due date, conception date, and fetal age.
- [Pressure Converter](https://calculator.com/calculate/pressure-converter/): Convert between pascals, bars, atmospheres, psi, torr, mercury column, water column, and other pressure units.
- [Prime Number Calculator](https://calculator.com/calculate/prime-number/): Enter a number and this calculator will instantly tell you if it is a prime number or not.
- [Pythagorean Theorem Calculator](https://calculator.com/calculate/pythagorean-theorem/): Enter any two sides of a right triangle and leave the unknown side blank. The calculator solves for side A, side B, or hypotenuse C, or verifies whether all three sides form a right triangle.
- [Quadratic Equation Calculator](https://calculator.com/calculate/quadratic-equation/): A calculator to figure the square root of the number you enter. Just enter the coefficients for the Ax^2 + Bx + C = 0 equation and the calculator will output the solutions (if they are not imaginary!). Neat!
- [Rent versus Buy Calculator](https://calculator.com/calculate/rent_v_buy/): This calculator allows you to compare renting versus buying by entering how much you want to spend a month and how much down you would put into your house.
- [Required Final Score Calculator](https://calculator.com/calculate/required-final-score/): Calculate the score needed on a final exam to reach a desired course grade.
- [Room Size Calculator](https://calculator.com/calculate/room-size/): This calculator allows you to find the approximate room size you will need depending on your room setup and arrangement.
- [Savings Estimator](https://calculator.com/calculate/savings/): Enter how much you can afford to save each month, how long you can save this amount, and the interest rate you can get on your savings and this calculator will display your total savings.
- [Simple Mortgage Payment Calculator](https://calculator.com/calculate/simple-mortgage/): This calculator allows you to calculate monthly payment, average monthly interest, total interest, and total payment of your mortgage.
- [Simple Tiling Calculator](https://calculator.com/calculate/tiling/): This calculator allows you to calculate how many tiles you need to cover a simple rectangular area. Works both in metric and imperial units. Works for both rectangular and square tiles.
- [Sine Calculator](https://calculator.com/calculate/sine/): Enter the opposite and hypotenuse angle values and this calculator will solve the sine angle for you. Neat!
- [Soccer Statistics Calculator](https://calculator.com/calculate/soccer-stats/): Calculate goalkeeper saves, save percentage, scoring percentage, shot ratios, and win percentages for soccer teams.
- [Social Distancing Calculator](https://calculator.com/calculate/social-distancing-impact/): We stay home! To understand why, adjust the 'Social distancing factor' slider to see the effect and impact of social distancing.
- [Speed Converter](https://calculator.com/calculate/speed-converter/): Convert between meters per second, kilometers per hour, miles per hour, knots, Mach, and other speed units.
- [Standard Calculator](https://calculator.com/calculate/standard/): Use this standard tape calculator for everyday arithmetic with a running calculation tape.
- [Stem and Leaf Plot](https://calculator.com/calculate/stem-and-leaf-plot/): This calculator allows you to create a special table where each data value is split into a stem (the first digit or digits) and a leaf (usually the last digit).
- [Stock Calculator](https://calculator.com/calculate/stock/): Deciding when to buy and sell stocks is difficult enough - figuring the profit or loss from that trade should not have to be. Just enter the number of shares, your purchase price, your selling price, and the commission fees for the trade and this calculator instantly figures your resulting profit or loss after commission fees.
- [Stocks vs. Bonds](https://calculator.com/calculate/stocks-vs-bonds/): How much do I keep in stocks and bonds?
- [Student Loan Calculator](https://calculator.com/calculate/student-loan/): Estimate student-loan payments, total interest, payoff timing, or an affordable loan amount.
- [Tangent Calculator](https://calculator.com/calculate/tangent/): This calculator will solve the tangent angle for you, just enter the opposite and adjacent angle values and press Calculate.
- [Temperature calculator](https://calculator.com/calculate/temperature/): The temperature calculator allows you to convert temperature degrees between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, Réaumur and Rømer. Enter a value in any field to see the other values.
- [Test Grade Calculator](https://calculator.com/calculate/test-grade/): Calculate a test percentage, fraction, and letter grade from correct or incorrect answers.
- [Time Converter](https://calculator.com/calculate/time-converter/): Convert between seconds, minutes, hours, days, weeks, months, years, and other duration units.
- [Torque Converter](https://calculator.com/calculate/torque-converter/): Convert between newton-meters, pound-feet, pound-inches, ounce-inches, and kilogram-force torque units.
- [Unit Converter](https://calculator.com/calculate/unit-converter/): Convert length, area, volume, speed, pressure, energy, power, time, and weight or mass units using curated unit choices.
- [Volume Converter](https://calculator.com/calculate/volume-converter/): Convert between metric, cubic, US liquid, Imperial, dry, and other volume units.
- [Weight / Mass Converter](https://calculator.com/calculate/weight-converter/): Convert between grams, kilograms, pounds, ounces, stones, tons, and metric tons.
- [Wind Chill Calculator](https://calculator.com/calculate/wind-chill/): Wind Chill is a mysterious and often misunderstood phenomenon. This calculator describes what the wind chill factor really is and offers a form to calculate the wind chill factor when given the air temperature and wind speed.