Age Calculator
Enter a date of birth to see your exact age in years, months, and days — plus total weeks, days, hours, minutes, and seconds you've been alive.
Enter dates
Your age
Age
26 yr 6 mo 10 d
26 years, 6 months, 10 days
Next birthday
174 days
Friday, January 1, 2027
- Total months
- 318
- Total weeks
- 1,384
- Total days
- 9,688
- Total hours
- 232,512
- Total minutes
- 13,950,720
- Total seconds
- 837,043,200
Born on a Saturday.
How the age calculator works
The calculator subtracts your date of birth from the "age at" date using the same calendar-based method you'd use on paper. It counts complete years first, then remaining full months, then remaining days — accounting for month lengths and leap years so February birthdays and month rollovers stay accurate.
Change the "age at" date to any past or future day to see how old you were, or will be, on that date. Everything runs locally in your browser; the numbers you enter are never sent to a server.
Frequently asked questions
How is age calculated in years, months, and days?
Complete years elapsed since birth, then remaining full months, then remaining days. This matches the way age is reported on most official documents.
Does it handle leap years and February 29?
Yes. Because the calculation walks the real calendar, leap days and 28/29/30/31-day months are accounted for automatically.
Can I calculate age at a future date?
Yes. Set the "age at" date to any future day to see how old you'll be on that date.