Free Age Calculator
Calculate your exact age from your date of birth down to the second. Enter your birth date and an as-of date to see your age in years, months, total weeks, total days, total hours, total minutes, and total seconds. Also shows days until your next birthday.
How to Use
- Enter your date of birth
- Choose the as-of date (defaults to today)
- Click Calculate Age
Privacy
All calculations happen locally in your browser. No dates are transmitted.
Last reviewed: July 2026.