Age Calculator

Enter your birth date and get your exact age down to the day, plus a handy countdown to your next birthday. Works with any date format.

How age is calculated

We compute years first (difference in year), then subtract 1 if the birthday hasn't occurred yet this year. Months and days follow the same borrow-from-previous-unit logic. Total days uses raw timestamp division — accurate for most common purposes.

Last updated September 13, 2026

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