Age Calculator
Calculate exact age in years, months and days, plus total months, weeks, days and next birthday countdown.
How to use
1. Enter your date of birth. 2. Optionally change the "as of" date (defaults to today). 3. See your exact age instantly.
Formula
Age is computed by calendar difference between the two dates, accounting for leap years and month lengths.
Examples
- Born 1995-03-15, as of 2026-09-25 → 31 years, 6 months, 10 days
Important notes
The calculator uses your local browser date. Time of birth is not considered.
Frequently asked questions
Can I calculate age on a past or future date?
Yes, change the second date to any date you want.
Does it account for leap years?
Yes, it uses full calendar arithmetic.