Age calculator: years, months, days and next birthday
Enter a birth date to see your exact age, the number of days lived and how long until the next birthday.
If empty, today's date is used.
Pick a date of birth to see the result.
How to use it
Pick a birth date. By default the age is calculated up to today, but you can enter any other date, for example to find out how old someone will be or was at a given moment.
- Age in years, months and days.
- Total days and weeks lived.
- The weekday you were born on.
- Days left until the next birthday and the age you will turn.
How it is calculated
Age follows the calendar: first whole years, then whole months, then the remaining days. If you were born on 29 February, the birthday is treated as 28 February in non-leap years.
Only dates are used, without a time of day, so the result does not depend on your time zone or daylight saving time.
Privacy
The calculation runs in your browser. Your birth date is never sent anywhere or stored.