Breakdown
How it works
Calendar age counts completed years and months, then remaining days, so results match what officials use. Total days are exact (leap years included).
Formula
Age = completed years, months, days between DOB and the chosen date
Total days = exact day count
Worked example
Born 15 June 1990, on 19 October 2026: 36 years, 4 months, 4 days — 13,275 days.
Frequently asked questions
How is age calculated for school or sport cut-offs?
By age on a fixed date (e.g. 31 August for UK school years, 1 January for many sports). Enter that date in "age on date".
Lunar / Hijri age?
A Hijri year is about 354 days, so your Hijri age is roughly 3% higher — about one year more every 33 years.