Age Calculator
Enter a date of birth to see an exact age and how long until the next birthday.
How to use it
- Pick the date of birth.
- Leave Age at on today, or choose another date to see the age on that day.
- Read your age in years, months and days, and the days left until the next birthday.
About this tool
The calculator counts whole years first, then whole months, then the remaining days. You can change the Age at date to find someone's age on a past or future day, for example for forms that ask for age on a cut-off date.
Frequently asked questions
Does it count leap years?
Yes. It uses real calendar dates.
Can I find an age on a past date?
Yes. Change the Age at date.
How are months counted?
As full calendar months since the last birthday.
Is my date stored?
No. It stays in your browser.