Age Calculator

Calculate calendar age in years, months and days on a date you choose.

Processed locally in your browser. Your input is not uploaded.

How to use Age Calculator

Choose a birth date and an optional calculation date. Today uses your browser’s local calendar date.

Details and limits

Month-end anniversaries are clamped to the last day of the month. A February 29 birthday is observed on February 28 in non-leap years. Total days use date-only arithmetic, unaffected by daylight saving time.

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