Age Calculator
Exact age from date of birth — updates as you change the date.
Date of birth
Age Calculation Result
Your Age
26y 8m 13d
Breakdown
Years
26
Months
8
Days
13
Total days lived
9,753
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AI insight
How to use
- Select your date of birth.
- Click Calculate Age.
- See years, months, days and total days lived.
How this tool works
The age calculator finds the difference between your date of birth and today, expressed in completed years, months and days, plus total days lived.
Formula
Years, months and days are computed by calendar difference with borrow rules when the current day or month is earlier than the birth day or month. Total days use the absolute day count between the two dates.
Example
If someone was born on 15 March 2000 and today is 15 March 2026, the completed age is 26 years, 0 months and 0 days.
Frequently asked questions
Does it use the local timezone?
It uses your device date. Travel across midnight or timezones can change 'today' by one day.
Leap years?
Day counts respect the calendar, including February 29 in leap years.