Age Calculator
Calculate your exact age in years, months, and days from any date of birth.
How to use the Age Calculator
- Enter your date of birth.
- Optionally change the “Age at” date (defaults to today).
- Click Calculate to see your exact age in years, months, and days, plus a birthday countdown.
Examples & tips
Example: Born 15 August 1995, today is 21 October 2026 → 31 years, 2 months, 6 days. Total days ≈ 11,390.
Tip: Use the target date field to find your exact age on a future birthday.
Frequently asked questions
How is exact age calculated?
The calculator counts complete years first, then complete months, then remaining days between your birth date and the target date, accounting for leap years.
Can I calculate age on a future date?
Yes. Change the "Age at" field to any date to see your age on that day.
Does it account for leap days?
Yes. February 29 birthdays are handled by treating each full year as 365.2425 days on average for the year fraction, with complete-year logic for the headline result.