3 Free Tools

Date & time calculators

Age, date math, and time arithmetic — clear answers fast.

Age Calculator

Calculate your exact age in years, months, and days from your date of birth.

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Date Calculator

Add or subtract days from a given date or find the difference between two dates.

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Time Calculator

Easily add, subtract, or convert hours, minutes, and seconds.

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Simplify date and time arithmetic: age from date of birth, differences between dates, and time add/subtract—handy for planning, HR, school, and everyday scheduling.

Pick the tool you need below; inputs are designed to be quick on mobile and desktop alike.