Age Calculator
Free online age calculator. Find your exact age in years, months and days from your date of birth — plus total days lived and a countdown to your next birthday.
How is exact age calculated?
Legal and everyday age is counted in completed calendar units: full years first, then remaining full months, then leftover days — not by dividing total days by 365. Someone born 15 March 2000 turns exactly 26 years, 3 months, 20 days old on 5 July 2026, with leap years handled by the calendar itself.
The 'as of' date makes the tool useful beyond curiosity: visa forms, school admissions and competitions often require your age on a specific cutoff date rather than today.
How to use
- 01Select your date of birth.
- 02Optionally pick a reference date (defaults to today).
- 03Click Calculate age.
- 04See your exact age, total days lived and days until your next birthday.
Frequently asked questions
- How is exact age calculated?
- The tool counts full years first, then remaining full months, then leftover days — the same way ages are stated legally. Leap years are handled automatically.
- Can I calculate age at a past or future date?
- Yes. Set the optional 'as of' date to any date — useful for forms that ask your age on a specific deadline.
- Is my date of birth stored?
- No. The calculation runs entirely in your browser and nothing is saved or sent anywhere.