Age Calculator
Enter a date of birth to get the exact age in years, months and days, with totals in days and weeks.
How to use it
- Enter the date of birth Use the date picker.
- Optionally change the "age at" date It defaults to today, but you can pick any date.
- Read the result See the exact age and totals instantly.
Examples
| 1990-06-15 to 2024-06-15 | 34 years |
|---|---|
| 2000-01-01 to 2024-07-01 | 24y 6m |
About this tool
This age calculator gives your exact age — not just in years, but the precise number of years, months and days, plus the total days and weeks you have lived.
It uses a calendar-aware method, so leap years and the different lengths of months are handled correctly. Enter a birth date and, optionally, a second date to find the age at that point. Everything is calculated in your browser.
Frequently asked questions
How is the age calculated?
We count complete years and months, then the remaining days, using a calendar-aware method that handles leap years and varying month lengths.
Does it account for leap years?
Yes. February 29 and the different lengths of months are handled correctly.
Related tools
Date Difference Calculator Pick two dates to see the number of days, weeks, and the full years-months-days breakdown between them. Unix Timestamp Converter Convert between Unix epoch seconds and readable dates, in both directions, with UTC and ISO output. Business Days Calculator Count working days between two dates, skipping weekends and any holidays you list. Countdown Timer Set a duration and count down to zero, with start, pause and reset controls. Date Add and Subtract Add or subtract years, months, weeks and days from a date to find the resulting date. Online Stopwatch Time anything to the centisecond, record laps, and pause or reset whenever you need.
Updated June 12, 2026