Age Calculator

Find your exact age in years, months and days from your date of birth, plus your age in total weeks and days.

Find your exact age in years, months and days from your date of birth, plus your total age in weeks and days. This age calculator handles leap years and different month lengths, so it works for forms, birthdays, milestones or simple curiosity.

Read the guide: How to Calculate Your Exact Age

How it works

  1. 1

    Enter your birth date

    Pick your date of birth from the calendar.

  2. 2

    See your exact age

    View your age in years, months and days.

  3. 3

    Explore the totals

    See your age expressed in weeks and total days too.

Instant & 100% private — nothing is uploaded

Every calculation runs locally in your browser. The measurements, dates and details you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.

Frequently asked questions

How is the age calculated?
It counts the full years, months and days between your birth date and today, handling different month lengths and leap years correctly.
Can I use it for any date?
It works for any past date of birth. It is handy for working out exact ages for forms, milestones or just curiosity.
Can I work out someone else's age?
Yes. Enter any past date of birth, such as a child's or a relative's, and you get their exact age today in years, months and days.

Important

These calculators give general, informational estimates and are not medical advice, diagnosis or treatment. Everyone is different — for decisions about your health, talk to a qualified clinician.

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