Exact age, down to the day
Enter a date of birth and get the precise age in years, months, and days. The calculator also shows total days lived, total weeks, total months, and counts down the days until the next birthday.
Calculators
Age Calculator
Calculate exact age from date of birth in years, months, and days — plus total days lived and a next-birthday countdown.
Defaults to today (2026-09-08) if left empty. Future dates allowed.
Enter a date of birth to see the calculated age.
Two fields, instant results
- Enter the date of birth in the first field
- Optionally pick an "as of" date (defaults to today)
- View the full age breakdown and next-birthday countdown