Dates & time
Age calculator
Calculate completed calendar years, months and days.
A clear answer. Here’s how.
Counts completed years and months using calendar anniversaries, then remaining days. Month-end anniversaries are clamped to the final valid day, so a 29 February anniversary falls on 28 February in non-leap years. Conventions for legal age can differ.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Date of birth or starting date
- 1990-06-15
- Age on this date
- 2026-10-16
Example result
- Calendar age
- 36 years, 4 months, 1 days
- Total elapsed days
- 13,272