Age calculator

Calculate an exact age in years, months, and days from a date of birth, plus the day count and next birthday.

Dates stay in this browser. The age-at date defaults to today.

Age

Choose the birth date and the age-at date.

How to use

  1. Enter the date of birth.
  2. Choose the date to calculate the age at.
  3. Calculate and read the result.

What it supports

Uses calendar arithmetic, so leap years and month lengths are exact. Dates stay in this browser; the age-at date defaults to today.

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