How to use it
- Pick the date of birth.
- Change the end date if you need to.
- Read the age in years, months and days, plus the totals.
The calculator compares the date of birth with the end date (today by default). It counts full years, then the months and days since the last birthday, and also shows totals in months, weeks, days and hours.
It follows the Gregorian calendar and accounts for leap years. For a birth on February 29, this calculator places the birthday on March 1 in non-leap years.
Frequently asked questions
How is the age calculated?
We count the full years since birth, then the months and days since the last birthday.
Can I calculate the age on another date?
Yes. Change the “Calculate until” field to any date, past or future.
Is my data stored?
No. The calculation happens in your browser and nothing is sent to our servers.