Age Calculator

Find your exact age in years, months and days. It also shows your age in months, weeks and days from your date of birth.

Age
Your age

    How this age is calculated

    Enter your birth date (and an optional “as of” date) to see how your age is calculated.

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    Frequently Asked Questions

    How do I calculate my age?

    Enter your date of birth. Optionally set an “as of” date to calculate your age on a specific day.

    Can I calculate my age on a past or future date?

    Yes. Change the “as of” date to any day to see your age on that date.

    Why do months and weeks not match perfectly?

    Months vary in length and years can include leap days, so month/week totals won’t always line up exactly.

    Is the result based on dates or exact times?

    This calculator is date-based (not time-of-day based), so it’s intended for calendar age.

    Can I share my result?

    Yes. Use the share button to copy a link to your current inputs and result.