Age Calculator
Calculate exact age in years, months, days and more — right in your browser.
100% private — everything runs in your browser
How to Use
- 1
Enter your date of birth — the results update instantly.
- 2
Optionally set Age at Date to calculate your age on a specific day.
- 3
Read your exact age in years, months and days, plus totals in weeks, months and hours.
- 4
Check Next Birthday to see how many days remain until your next birthday.
Examples
Exact age on a birthday
Input
Born 15 Jun 1990, at 15 Jun 2026Output
36 years · 0 months · 0 daysAge in total days
Input
Born 15 Jun 1990, at 15 Jun 2026Output
13,149 total daysFAQ
How is age calculated?
We count full years first, then full months, then the remaining days between your birth date and the target date — the same way you would count by hand.
Can I calculate my age on another date?
Yes. The Age at Date field accepts any date between your birth date and today.
How is the next birthday counted?
It counts the days from today until your next birthday. If today is your birthday, it shows Today!