Calculates exact age in years, months, and days from a birthdate.
The age calculator computes the exact time elapsed between a birthdate and today (or any target date), expressed in years, months, and days.
Age = Target date − Birth date Count complete years first, then complete months within the remaining days, then remaining days.
Born 15 March 1990, today 19 June 2026. Complete years: 36 (last birthday 15 Mar 2026). Months since: March 15 → June 15 = 3 months. Remaining days: 15 → 19 June = 4 days. Age: 36 years, 3 months, 4 days.
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