Calculators

Calculate exact age in years, months, and days from a birth date, with leap-year accuracy.

Work out percentages, percentage of a number, and what percent one value is of another.

Calculate percentage increase or decrease between an old and a new value.

Simplify ratios and solve proportions to find a missing value in A:B = C:D.

Find the mean, median, mode, sum, and range of a list of numbers.

A full scientific calculator with trig, logarithms, powers, roots, and operator precedence.

Calculate Body Mass Index in metric or imperial units, with a WHO category.

Estimate basal metabolic rate and daily calorie needs using the Mifflin-St Jeor equation.

Calculate monthly loan EMI, total interest, and total payment from principal, rate, and tenure.

Calculate simple interest and maturity amount from principal, rate, and time.

Calculate compound interest and future value with adjustable compounding frequency.

Add or remove GST/VAT with inclusive, exclusive, and reverse calculation modes.

Calculate the sale price and amount saved from an original price and discount percentage.

Calculate profit or loss and margin percentage from cost price and selling price.

Convert between metres, kilometres, miles, feet, inches, yards, and more.

Convert between kilograms, grams, pounds, ounces, stones, and tonnes.

Convert between Celsius, Fahrenheit, and Kelvin with exact formulas.

Convert between square metres, square feet, acres, hectares, and more.

Convert between litres, millilitres, gallons, cups, pints, and cubic metres.

Convert between km/h, mph, m/s, knots, and feet per second.

Convert between bytes, KB, MB, GB, TB using binary or decimal units.

Convert between seconds, minutes, hours, days, weeks, and years.