Free

Free Age Calculator

Enter your birthdate for your exact age in years, months, and days — plus total time lived and your next birthday countdown.

Free tool · No sign-up · Private

Your date of birth

Pick your birthdate above to see your exact age — years, months, days, plus fun stats like total hours lived and your next birthday countdown.

Private by design. Everything runs 100% in your browser — your birthdate is never uploaded, stored, or sent anywhere.

About this tool

About the age calculator

An age calculator answers the simple question “how old am I, exactly?” — not just in years but down to months and days. Enter your date of birth and instantly see your precise age, the total days, weeks, and hours you've lived, which weekday you were born on, and a live countdown to your next birthday.

Beyond curiosity, exact age matters for forms, eligibility checks, insurance quotes, and school admissions that ask for age in years and months. The calculation handles leap years automatically, so Feb 29 birthdays come out right. Everything runs locally in your browser — your birthdate never leaves your device.

How it works

Three steps to your age

Enter your birthdate

Pick the date from the calendar picker. Nothing is uploaded — it stays on your device.

See your exact age

Years, months, and days computed calendar-accurately, plus total days, weeks, and hours lived.

Check the extras

Find which weekday you were born on and count down the days to your next birthday.

FAQ

Age calculator questions

How is exact age calculated?

The calculator compares your birthdate with today's date: full years first, then remaining months, then remaining days — borrowing days from the previous month when needed, exactly like counting on a calendar.

Does it account for leap years?

Yes. Total days are computed from the actual millisecond difference between the two dates, so leap years (including Feb 29 birthdays) are handled automatically.

What does 'day of week born' mean?

It's the weekday your birthdate fell on — e.g. if you were born on a Tuesday, it shows Tuesday. Fun for birthday trivia and throwback posts.

How does the birthday countdown work?

It finds your next birthday (this year if it hasn't happened yet, otherwise next year) and counts the days remaining. If today is your birthday, it celebrates with you.

Is my birthdate private?

Yes. The calculation runs entirely in your browser — your birthdate is never uploaded, stored, or sent anywhere.

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