All Online Calculators
200+ free calculator tools for finance, health, math, and utility needs
Showing 213 calculators
401K Calculator
Free 401K calculator to plan and estimate a 401K balance and payout amount in retirement or help with early withdrawals or maximizing employer match.
Age Calculator
This free age calculator computes age in terms of years, months, weeks, days, hours, minutes, and seconds, given a date of birth.
Amortization Calculator
This amortization calculator returns monthly payment amounts as well as displays a schedule, graph, and pie chart breakdown of an amortized loan.
Annuity Calculator
Free annuity calculator to forecast the growth of an annuity with optional annual or monthly additions.
Annuity Payout Calculator
Free annuity payout calculator to find the payout amount based on fixed-length or to find the length the fund can last based on a given payment amount.
Anorexic BMI Calculator
BMI calculator variant focused on very low BMI interpretation ranges.
APR Calculator
Free calculator to find out the real APR of a loan, considering all the fees and extra charges.
Area Calculator
This area calculator determines the area of a number of common shapes, including rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram.
Army Body Fat Calculator
This calculator computes body fat percentage using methods from the Army Body Fat Assessment of the Army Body Composition Program.
Auto Lease Calculator
Free auto lease calculator to find the monthly payment and total cost for an auto lease.
Auto Loan Calculator
Free auto loan calculator to determine the monthly payment and total cost of an auto loan, while accounting for sales tax, fees, trade-in value, and more.
Average Calculator
Free calculator to determine the average, or the arithmetic mean, of a given data set. It also returns the calculation steps, sum, count, and more.
Average Return Calculator
Free calculator to find the average return of an investment considering all deposits and withdrawals or the average return of different holding lengths.
BAC Calculator
Online calculator to estimate the Blood Alcohol Concentration (BAC) level based on the amount of alcohol consumed, time elapsed, gender, and body weight.
Bandwidth Calculator
This calculator can convert between units of bandwidth, estimate download or upload times.
Base64 Encode Decode
Base64 encoder and decoder for text and developer utilities.
Base64 Encode/Decode
This free online tool can Base64-encode or decode text, images, and files directly in the browser.
Basic Calculator
This free online calculator can be used for basic computations such as addition, subtraction, multiplication, division, and square roots.
Big Number Calculator
This free big number calculator can perform calculations involving very large integers or decimals at a high level of precision.
Binary Calculator
This free binary calculator can add, subtract, multiply, and divide binary values, as well as convert between binary and decimal values.
BMI Calculator
Free Body Mass Index calculator gives out the BMI value and categorizes BMI based on provided information from WHO and CDC.
BMR Calculator
This free BMR calculator estimates basal metabolic rate based on well-known formulas and learns more about variables that affect BMR.
Boat Loan Calculator
Free boat loan calculator to determine the monthly payment and total cost of a boat loan, while accounting for sales tax, fees, trade-in value, and more.
Body Fat Calculator
This free body fat calculator estimates body fat percentage based on the U.S. Navy Method and the BMI method.
Body Surface Area Calculator
This body surface area calculator estimates the surface area of a person's body based on body weight and height. It compares the results of several formulas.
Body Type Calculator
This free body type calculator estimates body type based on provided measurements of bust, waist, and hip size.
Bond Calculator
Free calculator to compute various parameters of a bond including price and accrued interest.
Bra Size Calculator
This calculator estimates bra size based on bust size, frame size, and common measurement standards. Also converts bra sizes in the US, UK, EU, and Australia.
BTU Calculator
Two free calculators estimate the number of BTUs needed to cool or heat a room or house.
Budget Calculator
Detailed free budget calculator to plan personal finances with Debt-to-Income (DTI) ratio and expense breakdown.
Business Loan Calculator
Free business loan calculator that deals with complex repayment options and returns real APR/cost of a business or SBA loan.
Calorie Calculator
This calorie calculator estimates the number of calories needed each day to maintain, lose, or gain weight.
Calories Burned Calculator
Free calculator to estimate the number of calories burned during routine daily activities or a workout based on activity duration.
Canadian Mortgage Calculator
Free online mortgage calculator specifically customized for use in Canada including amortization tables and the respective graphs.
Carbohydrate Calculator
This free carbohydrate calculator estimates a range of daily carbohydrate requirements based on factors such as daily activity, height, and weight.
Cash Back or Low Interest Calculator
Free calculator to evaluate the options of either cash back or low interest offers when buying a car.
CD Calculator
Free calculator to find the total interest, end balance, and the growth chart of a Certificate of Deposit.
Circle Calculator
This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area.
College Cost Calculator
Free calculator to estimate how much college will cost in the U.S. using average college cost data or self-defined data.
Commission Calculator
Free calculator to compute simple percentage commission, tiered commission, or commission that includes a base amount.
Common Factor Calculator
Calculator to find common factors and greatest common factor for integers.
Compound Interest Calculator
Free compound interest calculator to convert and compare interest rates of different compounding periods.
Conception Calculator
Conception and due date estimator based on pregnancy timeline inputs.
Concrete Calculator
This free concrete calculator estimates the amount of concrete necessary for a project.
Confidence Interval Calculator
Calculator to compute the confidence interval or margin of error of a sample based on the desired confidence level.
Conversion Calculator
This free conversion calculator converts between common units of length, temperature, area, volume, weight, and time.
Credit Card Calculator
Free credit card calculator to find the time it will take to pay off a balance or the amount necessary to pay it off within a certain time frame.
Credit Cards Payoff Calculator
Free credit card payoff calculator for finding the best way to pay off multiple credit cards.
Currency Calculator
Free currency calculator to convert between most of the global currencies using live or custom exchange rates.
Date Calculator
This free date calculator computes the difference between two dates. It can also add to or subtract from a date.
Day Counter
Free day counter to calculate the number of days between two dates, including working days, weekends, and holidays.
Day of the Week Calculator
This weekday calculator can find the day of the week of any date and provides the calendar of the month.
Day of the Week Calculator
Find weekday from a specific date with calendar context.
Debt Consolidation Calculator
Free debt consolidation calculator to evaluate the consolidation of debts such as credit cards debts, auto loans, or personal loans based on the real cost.
Debt Payoff Calculator
Free calculator for finding the best way to pay off multiple debts such as those related to credit cards, auto loans, or mortgages.
Debt-to-Income Ratio Calculator
Free calculator to find both the front end and back end Debt-to-Income (DTI) ratio for personal finance use.
Density Calculator
This free density calculator determines any of the three variables in the density equation given the other two.
Depreciation Calculator
Free depreciation calculator using the straight line, declining balance, or sum of the year's digits methods.
Dew Point Calculator
This free dew point calculator calculates dew point, relative humidity, or air temperature.
Dice Roller
Online virtual dice roller that is capable of simultaneously rolling up to 100 dice randomly.
Discount Calculator
Online calculator to determine the final price after discount, the amount saved, or the original price before discount.
Distance Calculator
Free calculators to compute the distance between two coordinates on a 2D plane or 3D space.
Down Payment Calculator
Free down payment calculator to find the amount of upfront cash needed, down payment percentage, or an affordable home price.
Due Date Calculator
This free due date calculator estimates the due date based on the menstrual cycle, ultrasound, conception date, or IVF transfer date.
Electricity Calculator
Free electricity calculator to estimate electricity usage as well as cost based on power requirements.
Engine Horsepower Calculator
This free engine horsepower calculator estimates vehicle engine horsepower.
Estate Tax Calculator
Free estate tax calculator to estimate federal estate tax in the U.S. and check the latest estate tax rate.
Exponent Calculator
This free exponent calculator determines the result of exponentiation, including expressions that use the irrational number e as a base.
Factor Calculator
This free factor calculator computes the factors and prime factors of a given integer.
Fat Intake Calculator
This free fat intake calculator estimates the amount of dietary fat a person should consume daily based on age, height, weight, and activity.
FHA Loan Calculator
Free FHA loan calculator to find the monthly payment, total interest, and amortization details of an FHA loan.
Finance Calculator
Free online finance calculator to find the future value (FV), compounding periods (N), interest rate (I/Y), periodic payment (PMT), and present value (PV).
Fraction Calculator
This free fraction calculator supports fraction addition, subtraction, multiplication, division, and conversion.
Fuel Cost Calculator
This free fuel cost calculator estimates the fuel cost of a trip based on fuel efficiency, distance, and gas price.
Future Value Calculator
Free calculator to find the future value and display a growth chart of a present amount or periodic deposits.
Gas Mileage Calculator
This free gas mileage calculator estimates gas mileage based on odometer readings, gas price per gallon, and tank amount.
GDP Calculator
This free GDP calculator computes GDP using both the expenditure approach and the resource cost-income approach.
GFR Calculator
This GFR calculator estimates the glomerular filtration rate for both adults and children based on serum creatinine value.
Golf Handicap Calculator
Two free calculators for computing a golf player's course handicap and the World Handicap System (WHS) handicap index.
GPA Calculator
This GPA calculator computes GPA and generates a report based on course credits and achieved grade.
Grade Calculator
This free grade calculator can calculate a weighted average grade accepting both numerical and letter grades.
Gravel Calculator
This free gravel calculator estimates the amount of gravel needed to cover an area and can also estimate the cost.
Greatest Common Factor Calculator
This free GCF calculator determines the greatest common factor of a given set of numbers.
Half-Life Calculator
This calculator computes any of the values in the half-life formula given the rest values.
Healthy Weight Calculator
This calculator estimates a healthy body weight range based on body mass index and learns more about the effects of being underweight, overweight, or obese.
Heat Index Calculator
This calculator estimates heat index temperature felt by the human body based on actual measured air temperature with humidity level.
Height Calculator
This free height calculator predicts a child's adult height based on linear regression analysis. It can also convert between different units of height.
HELOC Calculator
Free calculator that finds the HELOC amount you can borrow, along with the monthly payment, interest, total cost, and APR.
Hex Calculator
This free hex calculator can add, subtract, multiply, and divide hexadecimal values, as well as convert between hexadecimal and decimal values.
Home Equity Loan Calculator
Free calculator that finds the home equity loan amount you can borrow, along with the monthly payment, interest, total cost, and APR.
Horsepower Calculator
This free calculator determines horsepower as a unit of power and provides a converter for common units of power.
Hours Calculator
This hours calculator computes the number of hours and minutes between two times.
House Affordability Calculator
Free house affordability calculator to estimate an affordable house price based on factors such as income, debt, down payment, or simply budget.
Ideal Weight Calculator
This free ideal weight calculator estimates ideal healthy bodyweight based on age, gender, and height based on several popular formulas.
Income Tax Calculator
Free online income tax calculator to estimate U.S federal tax refund or owed amount for both salary earners and independent contractors.
Inflation Calculator
Free inflation calculator that runs on U.S. CPI data or a custom inflation rate. Also, find the historical U.S. inflation data and learn more about inflation.
Interest Calculator
Free compound interest calculator to find the interest, final balance, and schedule using either a fixed initial investment and/or periodic contributions.
Interest Rate Calculator
Free online calculator to find the interest rate as well as the total interest cost of an amortized loan with a fixed monthly payback amount.
Investment Calculator
Free investment calculator to evaluate various investment situations considering starting and ending balance, contributions, return rate, and investment length.
IP Subnet Calculator
This IP subnet calculator covers both IPv4 and IPv6 protocols, providing information such as IP address, network address, subnet mask.
IRA Calculator
Free IRA calculator to estimate growth, tax savings, total return, and balance at retirement of Traditional, Roth IRA, SIMPLE, and SEP IRAs.
IRR Calculator
This calculator can calculate the Internal Rate of Return (IRR) for scenarios involving a fixed recurring cash flow, no cash flow, or irregular annual cash flows.
Lean Body Mass Calculator
This free lean body mass (LBM) calculator estimates LBM based on body weight, height, age, and gender.
Lease Calculator
Free lease calculator to find the monthly payment or effective interest rate as well as interest cost of a lease.
Least Common Multiple Calculator
This free LCM calculator determines the least common multiple of a given set of numbers.
Loan Calculator
Free loan calculator to find the repayment plan, interest cost, and amortization schedule of conventional amortized loans, deferred payment loans, and bonds.
Log Calculator
This free log calculator solves for the unknown portions of a logarithmic expression using base e, 2, 10, or any other desired base.
Long Division Calculator
Free calculator that determines the quotient and remainder of a long division problem and provides calculation steps.
Love Calculator
This free calculator evaluates compatibility based on two names, returning a score from 0% to 100%.
Macro Calculator
This macro calculator estimates the macronutrient needs of a person based on their age, physical characteristics, activity level, and bodyweight goals.
Margin Calculator
Three free calculators for profit margin, stock trading margin, or currency exchange margin calculations.
Marriage Calculator
Marriage-related planning calculator for tax and financial scenario analysis.
Marriage Tax Calculator
Free calculator to estimate the financial consequences of marriage to the participant individuals in terms of U.S. federal income taxation.
Mass Calculator
This free mass calculator calculates mass, given density and volume, using various standard units of measurement.
Math Calculator
General math calculator for arithmetic and scientific expressions.
Matrix Calculator
Free calculator to perform matrix operations on one or two matrices including addition, subtraction, multiplication, determinant, inverse, or transpose.
Mean Median Mode Range Calculator
Calculator to find mean, median, mode, and range from a data set.
Mean/Median/Mode Calculator
This calculator determines the mean, median, mode, and range of a given data set.
Mileage Calculator
This mileage calculator estimates the number of driving miles between two locations in the United States.
Molarity Calculator
This free molarity calculator determines any of the four variables in the molarity equation given the other three.
Molecular Weight Calculator
This molecular weight calculator can determine the molecular weight or molar mass of a molecule based on its formula.
Mortgage Amortization Calculator
Free online mortgage amortization calculator including amortization schedules and the related curves.
Mortgage Calculator
Free mortgage calculator to find monthly payment, total home ownership cost, and amortization schedule with options for taxes, PMI, HOA, and early payoff.
Mortgage Calculator UK
Free online mortgage calculator specifically customized for use in the UK including amortization tables and the respective graphs.
Mortgage Payoff Calculator
Free mortgage payoff calculator to evaluate options to pay off a mortgage earlier, such as extra payments, bi-weekly payments, or paying back altogether.
Mulch Calculator
This free mulch calculator estimates the total amount of mulch needed to cover an area such as a garden.
Mutual Fund Calculator
Free calculator to estimate the ending balance and net return of mutual funds including charges and fees.
Number Sequence Calculator
This free number sequence calculator can determine the terms of the arithmetic, geometric, or Fibonacci sequence.
Ohm's Law Calculator
This free Ohm's Law calculator solves for any of the variables in the Ohm's Law equation using various units of measurement.
One Rep Max Calculator
This free calculator estimates a person's one rep max (1RM) based on the number of repetitions they can perform with a given weight.
Overweight Calculator
Weight status calculator using BMI-aligned ranges and interpretation.
Ovulation Calculator
This free ovulation calculator provides estimates of a person's possible ovulation windows and corresponding due dates over six menstrual cycles.
P-value Calculator
Calculator to compute p-value from Z-score or Z-score from p-value for a normal distribution.
Pace Calculator
This free pace calculator computes pace, time, and distance, given values for two of the variables. It can also be used for training purposes.
Password Generator
A random password generator to create strong and secure passwords.
Payback Period Calculator
Free calculator to find payback period, discounted payback period, and the average return of either steady or irregular cash flows.
Payment Calculator
Free payment calculator to find monthly payment amount or time period to pay off a loan using a fixed term or a fixed payment.
Pension Calculator
Free calculator to help optimize pension payout or planning considering lump sum or monthly payouts, single-life or joint and survivor payouts.
Percent Calculator
Free percent calculator for percentage values, percentage change, and ratio-based percent calculations.
Percent Error Calculator
This free percent error calculator computes the percentage error between an observed value and the true value of a measurement.
Percent Off Calculator
Online calculator to compute the final price after a percentage discount.
Percentage Calculator
This free percentage calculator computes a number of values involving percentages, including the percentage difference between two given values.
Period Calculator
This free calculator estimates days in the future during which a person is expected to undergo their period.
Permutation and Combination Calculator
This free calculator can compute the number of possible permutations and combinations when selecting r elements from a set of n elements.
Permutation and Combination Calculator
Calculator for permutation and combination problems in probability and statistics.
Personal Loan Calculator
Free personal loan calculator that returns the monthly payment, real loan cost, and the APR after considering the fee, insurance, interest of a personal loan.
Pregnancy Calculator
This calculator provides an estimated pregnancy schedule based on the due date, last period date, ultrasound date, conception date, or IVF transfer date.
Pregnancy Conception Calculator
Pregnancy conception date estimator using due date and cycle assumptions.
Pregnancy Weight Gain Calculator
This pregnancy weight gain calculator provides a recommended weight gain schedule on a week-by-week basis based on pre-pregnancy bodyweight and IOM guidelines.
Present Value Calculator
Free financial calculator to find the present value of a future amount or a stream of annuity payments.
Prime Factorization Calculator
This free prime factorization calculator finds the prime factors as well the factor tree of a given integer.
Probability Calculator
This calculator can calculate the probability of two events, as well as that of a normal distribution.
Protein Calculator
This free protein calculator estimates the amount of protein a person needs each day to remain healthy based on certain averages and recommendations.
Pythagorean Theorem Calculator
Pythagorean Theorem calculator to find out the unknown length of a right triangle.
Quadratic Formula Calculator
This free quadratic formula calculator solves the quadratic formula given values for a, b, and c.
Random Number Generator
Two free random number generators that work in user-defined min and max range. Both random integers and decimal numbers can be generated with high precision.
Ratio Calculator
This ratio calculator solves ratios, scales ratios, or finds the missing value in a set of ratios.
Real Estate Calculator
Real estate planning calculator for property financing and investment scenarios.
Refinance Calculator
Free calculator to plan the refinancing of loans by comparing existing and refinanced loans side by side.
Rent Calculator
Free rent calculator to estimate the range of affordable monthly rent based on income and debt.
Rent vs. Buy Calculator
Free calculator to compare the financial aspects of renting vs. buying a house accounting for interest, tax, fees, and many other factors.
Rental Property Calculator
Free rental property calculator estimates IRR, capitalization rate, cash flow, and other financial indicators of a rental or investment property.
Repayment Calculator
Free repayment calculator to find different ways to repay a loan, based on compounding periods, payment frequency, and fixed loan term or fixed payback amount.
Resistor Calculator
This resistor calculator converts the ohm value and tolerance based on resistor color codes.
Retirement Calculator
Free calculators that help with retirement planning with inflation, social security, life expectancy, and many more factors being taken into account.
Right Triangle Calculator
Right triangle calculator for sides, angles, area, and hypotenuse-based calculations.
RMD Calculator
This calculator computes the Required Minimum Distribution (RMD) of your retirement accounts and predicts future distributions.
ROI Calculator
Free return on investment (ROI) calculator that returns total ROI rate and annualized ROI using either actual dates of investment or simply investment length.
Roman Numeral Converter
This free converter converts between Arabic numbers and Roman numerals.
Roofing Calculator
This free roofing calculator estimates the area of a roof and materials required.
Root Calculator
This free root calculator determines the roots of numbers, including common roots such as a square root or a cubed root.
Roth IRA Calculator
Free Roth IRA calculator to estimate growth, tax savings, total return, and balance at retirement with the option to contribute regularly.
Rounding Calculator
Free tool to round numbers to thousands, hundreds, tens, tenths, hundredths, fractions, or many other levels of precision.
Salary Calculator
A free calculator to convert a salary between its hourly, biweekly, monthly, and annual amounts accounting for holidays and vacation days.
Sales Tax Calculator
Free calculator to find the sales tax amount/rate, before tax price, and after-tax price. Also check sales tax rates in different states of the U.S.
Sample Size Calculator
This free sample size calculator determines the sample size required to meet a given set of constraints.
Savings Calculator
Free calculator to find out the balance and interest of a savings account while accounting for tax, periodic contributions, compounding frequency.
Scientific Calculator
This is an online scientific calculator with double-digit precision that supports both button click and keyboard type.
Scientific Notation Calculator
Online tool to convert between number formats including scientific notation, E-notation, engineering notation, and real numbers.
Shoe Size Conversion
This free tool converts between shoe sizes used in the U.S., Canada, UK, India, EU, Japan, Mexico, and China.
Shoe Size Conversion
Shoe size conversion between international regions and standards.
Simple Interest Calculator
This calculator computes the simple interest and end balance of a savings or investment account. It also calculates other parameters of the simple interest formula.
Sleep Calculator
Calculator to compute the time to wake up or go to bed based on sleep cycle or duration of sleep required.
Slope Calculator
This slope calculator solves for parameters involving slope and the equation of a line.
Social Security Calculator
Free Social Security calculator to find the best age to start SS benefits, or compare differences between starting SS at different ages in the U.S.
Speed Calculator
This free speed calculator computes any of the three variables in the speed distance time equation given the other two.
Square Footage Calculator
This free calculator estimates the square footage of a property and accounts for various common lot shapes.
Stair Calculator
This stair calculator computes stair parameters such as rise, total run, angle, and stringer length.
Standard Deviation Calculator
This free standard deviation calculator computes the standard deviation, variance, mean, sum, and error margin of a given data set.
Statistics Calculator
This statistics calculator computes a number of common statistical values including standard deviation, mean, sum, geometric mean, and more.
Student Loan Calculator
Free calculator to evaluate student loans by estimating the interest cost, helping to understand the balance, and evaluating pay-off options.
Surface Area Calculator
This calculator computes the surface area of a number of common shapes, including sphere, cone, cube, cylinder, and more.
Take-Home-Paycheck Calculator
Free calculator to find the actual paycheck amount taken home after taxes and deductions from salary.
Target Heart Rate Calculator
This free calculator calculates the target heart rate range for maximizing exercise benefit based on age and resting heart rate.
TDEE Calculator
This calculator estimates the Total Daily Energy Expenditure (TDEE) of a person based on their age, physical characteristics, and activity level.
Tile Calculator
This calculator estimates the number of tiles needed to cover an area such as a floor, wall, or roof.
Time Calculator
This free time calculator can add or subtract time values in terms of number of days, hours, minutes, or seconds.
Time Card Calculator
This free time card calculator generates weekly time reports based on provided work times and hourly rates.
Time Duration Calculator
Free calculator to get the number of hours, minutes, and seconds between two times.
Time Zone Calculator
This calculator converts between different time zones around the world using the GMT format.
Tip Calculator
This free tip calculator computes tip amounts for various situations. It can also calculate the tip amount split between a given number of people.
Tire Size Calculator
Free calculator to find the dimensions of a tire based on its code and helps in choosing alternative tire sizes.
Triangle Calculator
This free triangle calculator computes the edges, angles, area, height, perimeter, and median of the resulting triangle.
URL Encode Decode
URL encoder/decoder for converting reserved characters to URL-safe format.
URL Encode/Decode
This free online tool can encode or decode data to and from a URL-compatible format.
VA Mortgage Calculator
Free VA mortgage calculator to find the monthly payment, total interest, funding fee, and amortization details of a VA loan.
VAT Calculator
Free VAT (value-added tax) calculator to find any value of the net before VAT tax amount, tax price, VAT tax rate, and final VAT inclusive price.
Voltage Drop Calculator
This free voltage drop calculator estimates the voltage drop of an electrical circuit based on wire size, distance, and anticipated load current.
Volume Calculator
This free volume calculator computes the volumes of common shapes, including sphere, cone, cube, cylinder, and more.
Weight Calculator
This free weight calculator converts between common units of weight and mass.
Weight Watchers Points Calculator
Diet points estimator for meal planning and calorie-awareness workflows.
Wind Chill Calculator
This calculator estimates wind chill temperature based on air temperature and wind speed.
Z-score Calculator
Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.
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