Free online calculators
16 calculators for maths, finance, health and everyday sums. Each one updates as you type, shows the formula it used, and runs entirely in your browser.
Finance4
Pay, margins and business arithmetic.
Health2
Body composition and growth estimates.
Math9
Percentages, averages, geometry and rounding.
Other1
Everything that does not fit a category yet.
All calculators
Percentage calculatorPercentage increase calculatorPercentage difference calculatorDiscount calculatorPercent off calculatorAverage calculatorMidpoint calculatorSignificant figures calculatorTrigonometry calculatorHourly to salarySalary to hourlyMargin calculatorNet profit marginBody fat calculatorHeight calculatorTip calculator
Coming next: Chemistry, Construction, Conversion, Ecology, Everyday life, Food, Physics, Sports, Statistics.