You are
–Months
–Weeks
–Days
–Hours
📅 Born on a
🎉 Next birthday in
Our free age calculator tells you exactly how old you are in years, months and days from your date of birth — no maths, no counting on your fingers. Beyond your age, it breaks the total down into months, weeks, days and even hours lived, tells you which day of the week you were born on, and counts down the days to your next birthday. Everything runs instantly inside your browser, so your date of birth never leaves your device.
It's handy for forms that ask for your exact age, for working out age gaps, checking eligibility by a certain date, or just satisfying curiosity. Change the second date to calculate how old you were on a past date, or how old you'll be on a future one.
We compare your date of birth to today (or any date you choose), accounting for different month lengths and leap years, to give an exact years-months-days result.
Yes. The tool runs entirely in your browser. Your date of birth is never uploaded or stored anywhere.
Yes — set the "age at the date of" field to any date to see how old you were, or will be, on that day.
Completely free, with no sign-up or installation. Use it as often as you like.
The headline figure is your exact age — the number of whole years, months and days between the two dates, with month lengths and leap years taken into account. Beneath it you also get your total months, weeks, days and hours lived, which is useful when a form or a milestone asks for one specific unit. Changing the age at the date of field recalculates everything for that day, so you can look up how old you were at a past event or how old you will be when a deadline arrives.