Age Calculator
Work out exact age in years, months and days, plus days until the next birthday.
Enter a date of birth to see the age.
About this tool
Enter a date of birth and see exact age in years, months and days, along with the total number of months, weeks, days and hours lived. You can also change the 'age at' date to find out how old someone was or will be on any day, such as an application deadline or school cut-off.
How to use it
- Choose the date of birth.
- Leave the 'age at' date as today, or pick another date.
- Read the exact age and the days left until the next birthday.
Frequently asked questions
How is exact age calculated?
The tool counts full years from the birth date, then the remaining full months and days, borrowing the length of the previous month when needed.
What if I was born on 29 February?
In non-leap years the next birthday is counted on 28 February.
Is my date of birth stored?
No. The calculation runs in your browser and nothing is sent anywhere.