Calculators
General-purpose calculators for everyday math.
Percentage Calculator
Find a percentage of a number, work out what percent one value is of another, or calculate percentage change.
Open toolAge Calculator
Calculate exact age in years, months, and days between two dates.
Open toolBMI Calculator
Calculate your Body Mass Index using metric or imperial units.
Open toolSimple Interest Calculator
Calculate simple interest and total repayment on a loan or deposit.
Open toolCompound Interest Calculator
See how your money grows with compound interest over time, at any compounding frequency.
Open toolTip Calculator
Calculate tip amount and split the total bill between any number of people.
Open toolBMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at rest.
Open toolGPA Calculator
Calculate your cumulative GPA from letter grades and credit hours.
Open toolGrade Percentage Calculator
Convert points earned into a percentage grade and letter grade.
Open toolAverage Calculator
Calculate the mean, median, mode, and range of a list of numbers.
Open toolStandard Deviation Calculator
Calculate sample or population standard deviation and variance.
Open toolRatio Calculator
Simplify a ratio to its lowest terms.
Open tool