Age Calculator
Enter a birth date to get an exact age — years, months and days, plus total weeks, days and hours lived.
Exact age
31 years, 3 months, 15 days
Total months
375
Total weeks
1,632
Total days
11,430
Total hours
274,320
How to use the Age Calculator
- 1Enter your date of birth
- 2Optionally change the 'age at' date
- 3Read your exact age in multiple units
Frequently Asked Questions
How is age calculated?
Age counts full years since birth, then remaining full months, then days — the same method used for legal documents.
Does it handle leap years?
Yes — Feb 29 birthdays and leap-year spans are handled correctly using real calendar arithmetic.