Life has numbers.
Let’s make them simple.
From your next home to your next run, find the right
calculator for the decisions that matter.
What’s on your mind?
Mortgage calculator
Understand your monthly payment and the true cost of a home.
Loan calculator
Compare terms and see what borrowing will cost.
Auto loan calculator
Estimate payments on the amount you finance.
Amortization calculator
See principal, interest and balance for every payment.
Payment calculator
Find the monthly payment for a fixed-rate loan.
Income tax calculator
Country-specific income tax, with transparent assumptions.
Compound interest
See how your savings can grow over time.
Investment calculator
Project an investment with regular contributions.
Retirement savings
Estimate the savings you could build for retirement.
Simple interest
Calculate interest without compounding.
Inflation calculator
Explore changing prices and purchasing power.
Salary calculator
Turn hourly pay into monthly and annual income.
Sales tax / VAT / GST
Add tax or extract it from an inclusive price.
Discount calculator
Find the sale price and how much you save.
Tip & split bill
Add a tip and split the bill evenly.
BMI calculator
Calculate body mass index from height and weight.
BMR calculator
Estimate resting energy with Mifflin–St Jeor.
Calorie calculator
Estimate maintenance energy for your activity level.
Pace calculator
Turn distance and time into pace and speed.
Due date calculator
Estimate a due date from the first day of the last period.
Pregnancy date calculator
Estimate a due date from the first day of the last period.
Scientific calculator
Arithmetic, powers, trigonometry and logarithms.
Percentage calculator
Find a percentage of any number.
Percentage change
Measure the change between two values.
Fraction calculator
Add, subtract, multiply and divide fractions.
Triangle calculator
Calculate area and perimeter from three sides.
Standard deviation
Calculate population or sample standard deviation.
Average & median
Find the mean, median and sum of a list.
Quadratic equation
Solve for real or complex roots.
Rectangle area
Calculate a rectangle’s area and perimeter.
Cuboid volume
Calculate the volume of a rectangular space.
Random number
Generate a random integer in an inclusive range.
Age calculator
Find completed years and days between dates.
Date difference
Count calendar days between two dates.
Add days to date
Find the date before or after a number of days.
Work hours
Calculate a shift, including overnight work.
Time conversion
Convert hours, minutes and seconds.
GPA calculator
Calculate a credit-weighted GPA on a 4.0 scale.
Final grade calculator
Find the final exam score you need.
Concrete calculator
Estimate concrete volume with a waste allowance.
Length converter
Convert metric and imperial lengths.
Temperature converter
Celsius, Fahrenheit and Kelvin.
Fuel consumption
Estimate fuel consumption and cost.
Password generator
Generate a random password on your device.
IPv4 subnet calculator
Find network, broadcast and subnet mask.
No calculators found. Try a different search.
Straight to the answer
No accounts, no complicated steps. Just your numbers and an answer.
Know what’s behind it
Clear formulas and assumptions, so the result makes sense.
Your numbers stay yours
Calculations run in your browser. Your inputs are not uploaded.