Age
Exact age in years, months and days, plus the next birthday.
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About Age
Age works out an exact age in years, months and days — accounting for the different lengths of months, which is where simple subtraction goes wrong. It also gives the total days lived and a countdown to the next birthday, and can calculate age as at any date rather than today.
How to use it
- Enter a date of birth.
- Leave the second date as today, or change it to work out age at a particular moment.
- Read the exact age, total days and next birthday.
Questions
Why do some age calculators disagree?
Because months vary in length, so "one month later" is ambiguous. This counts calendar months properly, borrowing days from the preceding month when needed.
How does it handle 29 February birthdays?
The next birthday falls on 1 March in non-leap years, which is the common legal convention.
Age is free and runs entirely in your browser. No account, no upload, no watermark, no limit on use.