Calculators

Free online calculators

Everyday calculations with clear rules, useful examples and no uploads.

Calculators

8 tools

Calculate percentages, percentage change, and increases or decreases.

Find the mean, median, sum, minimum and maximum of a list of numbers.

Simplify whole-number ratios exactly or solve a missing term in a proportion.

Convert length, mass and temperature using international measurement definitions.

Count calendar days between two dates, with an optional inclusive count.

Calculate completed years, elapsed days and the next birthday for a chosen date.

Calculate a sale price, savings and the effective percentage of two successive discounts.

Add or subtract days, weeks, months or years from a calendar date.

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