Free Age Calculator
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About the Age Calculator
Find your exact age in years, months and days from your date of birth — plus a countdown to your next birthday, all calculated in your browser.
How to use the Age Calculator
- 1Enter your date of birth.
- 2Optionally change the “age at” date to work out your age on a different day.
- 3See your exact age in years, months and days.
- 4Everything is calculated in your browser — nothing is uploaded.
Frequently asked questions
Is this age calculator free?
Yes — completely free, with no sign-up and no watermark.
Is my date of birth uploaded anywhere?
No. Your date of birth is used only in your browser — nothing is sent anywhere.
How is the exact age calculated?
It counts the whole years, then the whole months, then the remaining days between your date of birth and the chosen date — the same way you'd naturally say someone is “26 years, 4 months and 20 days old”.
Can I calculate my age on a past or future date?
Yes — change the “age at” date to any date on or after your date of birth to see how old you were, or will be, then.
How does it handle leap years?
Dates are compared on the real calendar, so leap days are counted correctly — including for people born on 29 February.