What it does
The Age Calculator works out an exact age in years, months and days from a date of birth. It also shows the weekday of birth, the next birthday with a countdown, totals in months, weeks, days, hours and minutes, and the star sign.
How to use it
- Enter the Date of birth.
- Leave Age on date as today, or set another date to find an age on that day, for example a school or job deadline.
Example
Born on 15 March 1990, on 28 October 2026:
| Result | Value |
|---|---|
| Age | 36 years, 7 months, 13 days |
| Born on a | Thursday |
| Total days | 13,376 |
| Next birthday | 15 March 2027, in 138 days, turning 37 |
Good to know
- Someone born on 29 February has their birthday on 28 February or 1 March in other years, depending on the rules where they live.
- Some cultures count age differently, for example from 1 at birth. This calculator uses the international convention.
- To count days between any two dates, use the Date Calculator.
FAQ
How is the age in months and days worked out? Full years are counted first, then full months, then the remaining days, the same way you would count on a calendar.
Is my date of birth stored? No. It is used only on this page.