Age Calculator
CalculatorsCalculate exact age in years, months, days, and more.
Age calculator
Your age
years months days
Months lived
Weeks lived
Days lived
Hours lived
Next birthday in days ().
Please choose a valid birth date in the past.
What is Age Calculator?
Age Calculator works out an exact age in years, months, and days from a date of birth, with correct leap-year handling.
How to use Age Calculator
- 1 Enter the date of birth.
- 2 Optionally set the date to calculate age as of.
- 3 Read the result in years, months, and days, plus total days.
Supported formats and limits
- Input: a date of birth
- Output: age in years, months, days
- Runs in your browser
Common uses
- Complete a form that asks for exact age.
- Check eligibility ages for applications.
Things to know
- It relies on the date you enter.
- Leap years are handled but results assume a valid calendar date.
Privacy and file handling
All calculation is done in your browser; no dates are stored or sent.
Frequently asked questions
How are leap years handled?
The calculator uses real calendar months and accounts for leap years, so February 29 is treated correctly.
Can I calculate age on a future or past date?
Yes. Set the as-of date to any day to see the age at that point in time.
Does the age calculator account for leap years?
Yes. It calculates using real calendar dates, including leap years.
Can I get the age in months and days?
Yes. It shows years, months and days, plus the total number of days.
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