How is age calculated?
Age is the number of full years, months and days between a date of birth and a reference date. If the day of the month has not been reached yet, the last month is not counted as complete.
By default the calculation uses today's date, but you can change it to find someone's age on any other day, for example on a past or future date.
How to use the Age Calculator
- 1Enter the date of birth.
- 2Optionally change the date to calculate the age on.
- 3Read the exact age and the days until the next birthday.
Frequently asked questions
Is the age calculated exactly?
Yes. The calculation uses calendar dates, so leap years and different month lengths are handled correctly.
What happens with a February 29 birthday?
In years without a leap day, the birthday is counted on February 28.
Is my date of birth stored?
No. Everything is calculated in your browser and nothing is sent or saved.