Date & Time
Age Calculator
Calculate an exact calendar age and the total number of days since a birth date.
Calendar age36 years, 8 months, 27 days
Total days13,419
How to use
- Enter a date of birth.
- Optionally change the comparison date.
- Review years, months, days, and total days.
Examples
- Check an age on a future event date.
- Calculate total days since birth.
Frequently asked questions
How are months handled?
The calculator borrows calendar months and respects their actual lengths.
Is my birth date stored?
No. All calculations remain in your browser.