How is age calculated?

Age is calculated by subtracting your date of birth from today's date, giving your exact age in years, months and days. The calculator also shows your total days, weeks, hours and minutes lived.

How do I find how many days until my next birthday?

Enter your date of birth and the calculator shows the date of your next birthday and the exact number of days remaining until it.

Does the age calculator account for leap years?

Yes. The calculator uses real calendar dates, so leap years and different month lengths are handled automatically, giving an exact count of total days lived.

Age Calculator

Find your exact age in years, months and days — plus days until your next birthday.

date of birth
age at date

Enter a date of birth to calculate age.

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About this age calculator

Enter your date of birth (and optionally a different “age at” date) to see your age broken down into years, months and days. You also get the total number of months, weeks, days and hours you have lived, the weekday you were born on, and a live countdown to your next birthday. Related tools: time calculator, Unix timestamp, week number, event countdowns.