Age Calculator
Find your exact age in years, months and days, total days lived and the countdown to your next birthday.
Your age
How it works
Enter a date of birth; the second date defaults to today but you can change it to find someone's age on any date. The calculator counts full years, then full months, then the remaining days, taking month lengths and leap years into account.
Frequently asked questions
How is age calculated for someone born on 29 February?
In non-leap years the birthday is treated as 1 March.
Is my data stored?
No. The calculation runs entirely in your browser.