Age Calculator: Find Your Exact Age

We count the full years, months and days between your birth date and the end date, then break the remainder into hours, minutes and seconds using your local timezone.

Yes. Once you enter a birth date, the seconds counter updates every second while the page is open.

We count a month from the same day number in the previous month. For example, Feb 28 to Mar 28 is one month, so Feb 28 to Mar 31 is one month and 3 days. When the day does not exist in a month (such as the 31st), we use the last day of that month. Other tools may count end-of-month dates differently, and both approaches are reasonable.

The Gregorian calendar, used by most of the world. Leap years are handled automatically.

We find the next occurrence of your birth month and day. If your birthday is February 29, non-leap years are treated as February 28.

It calculates international age, which increases on your birthday. East Asian systems count a person as 1 at birth and add a year at New Year instead, so the result will differ by one or two years in those systems.

We use the Western tropical zodiac, which assigns one of 12 signs by birth month and day. Cutoff dates can shift by a day in some years, so people born on a boundary date may see slightly different results in other sources.

Yes. Switch to Date Difference mode and pick any two dates, for contracts, projects, anniversaries or deadlines.

No. Everything is calculated in your browser and nothing is sent to us or any third party.

Once the page has loaded, the calculation runs entirely in your browser, so it keeps working if you lose your connection.

Yes. Enter their birth date. Nothing is stored on our servers.

Common ages people celebrate or track: 18, 21, 30, 40, 50, 60, 70, 80, 90 and 100. The tool shows how many days remain until each one.

Months have 28, 29, 30 or 31 days. We use the real length of each month instead of a 30-day average.

Years, months and days are counted on the calendar, so daylight saving does not change them. It can shift the hour-level counts by up to an hour on the days the clocks change.

Yes. Change the "Age at" date to a future date, such as a graduation or wedding, to see how old you will be.

The exact time elapsed from a date of birth to a given date. It is the standard measure of age in legal and medical contexts.

Any date on the Gregorian calendar. For dates before the calendar was adopted in a given country (for example, before 1582 in parts of Europe), historical records may use a different calendar.