An age calculator determines how old you are today based on your date of birth. It is useful for forms, eligibility checks, and personal records.
How to use this calculator
- Enter your birth year.
- Enter your birth month as a number from 1 to 12.
- Enter your birth day.
- Review your age in years, months, and days.
Formula
Age is calculated by comparing today's date to your birth date, accounting for partial months and leap years.
Example
Someone born on June 15, 1990 would see their current age broken into years, months, and days from today's date.
Frequently asked questions
- Does this use my local timezone?
- The calculation uses the current date in the environment where the page is rendered, typically your local browser or server date.
- What if I enter an invalid date?
- Invalid dates may produce unexpected results. Use a valid day for the given month and year.