Age Calculator
Pick your date of birth to see your exact age in years, months, days and total days lived.
Age—
Total days—
Total weeks—
Total hours—
Calculations happen in your browser. No data is sent to a server.
How to use this age calculator
- Pick your date of birth.
- The age is shown in years, months and days as of today.
- Optionally pick a different reference date to calculate age at another point in time.
Frequently asked questions
How is the age calculated?
The age is the difference between the reference date (today by default) and your date of birth, broken down into completed years, months and days.
Does it account for leap years?
Yes. The calculation uses standard date math which respects leap years.
Can I calculate someone else's age?
Yes. Enter their date of birth instead of yours.
Is my data sent to a server?
No. The calculation happens entirely in your browser.