Tools · Calculators
Age Calculator
Enter a date of birth and an optional age-at date. Leap days and month ends are handled on this page.
26Years
8Months
24Days
320Total months
1394Total weeks
9764Total days
15 Jan 2027Next birthday
98 daysUntil next birthday
Dates are processed in this session and are not stored.
What is an age calculator?
It turns two calendar dates into years, months, and leftover days, which is more precise than “age in years” alone.
How to use it
- Enter the date of birth.
- Leave Age at as today, or pick another date.
- Read years, months, days, and the next birthday.
Why use it?
Schools, HR forms, and family records often need exact age, not a rounded year.
FAQ
What happens with a 29 February birthday?
In a non-leap year the anniversary is treated as 28 February.
Can the birth date be in the future?
No. The age-at date must be on or after the date of birth.
Read the original guide: Get an exact age without counting on your fingers.