Free Age Calculator
Calculate your exact age in years, months and days from your date of birth.
How to Use
- Choose your date of birth.
- Optionally change the calculation date.
- View your exact age and total elapsed days instantly.
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About This Tool
Calculate a person’s exact age from a date of birth and a selected calculation date. JunctionTools shows completed years, months, days and total elapsed days so the result is useful for birthdays, eligibility checks and date planning.
How to Use It
Choose the date of birth, optionally change the calculation date, and run the calculator. The result compares the two calendar dates rather than simply dividing a number of days by 365.
How the Calculation or Check Works
Calendar age is calculated from the difference between the two dates. The calculator accounts for the actual number of days in each month and leap years, so a result expressed as years, months and days follows calendar boundaries.
Practical Example
For a birth date of 15 March 1990 and a calculation date of 15 March 2026, the completed age is 36 years. Changing the calculation date lets you check age on a past or future date.
Frequently Asked Questions
Can I calculate age on a date other than today? Yes. Enter the date you want to use as the calculation date.
Does the calculator handle leap years? Yes. Date arithmetic uses calendar dates, including leap-year February dates.
Is my date of birth uploaded? The calculator is designed to perform the calculation in the browser.