Tool Library

Calculators

Fast calculators for everyday numbers, dates, health, and planning.

Calculate percentages, ratios, and percentage change between two numbers.

Calculate VAT included, VAT excluded, and tax amount using your selected rate.

Calculate age in years, months, days, and total days from a birth date.

Find the difference between two dates in days, weeks, months, and years.

Calculate body mass index from height and weight.

Calculate count, sum, average, minimum, and maximum from a list of numbers.

Run basic arithmetic, decimals, parentheses, and exponent calculations safely.