Calculate your exact age in years, months, and days from your date of birth, plus total days and your next birthday. Free and instant.
Last updated 23 June 2026 · Built and maintained by Mustafa Bilgic
Enter your date of birth and this age calculator works out your exact age in years, months, and days. It also shows how many total days, weeks, months, and hours you have lived, plus a countdown to your next birthday. By default it calculates age as of today, but you can set any target date.
The calculator counts complete years first, then remaining complete months, then leftover days, accounting for the different lengths of each month and for leap years. This matches the everyday way people state age, such as "34 years, 2 months, and 11 days".
It uses real calendar dates, so February 29 and the varying lengths of months are handled automatically. The day and month breakdown is always exact.
Yes. Use the second date field to find how old someone was, or will be, on any specific date rather than today.
These show your entire age expressed in a single unit, for example the full number of days you have been alive, which is useful for milestones and fun facts.
Yes. The result includes how many days remain until your next birthday, based on the calculation date you choose.
Yes. The calculation runs entirely in your browser. Your date of birth is never sent to or stored on any server.