Free Online Age Calculator

Subtract your birth date from today's date in three parts: full years, then full months, then leftover days. Here, enter your date of birth, leave Age as of on today and click Calculate. Someone born May 15, 1990 gets 36y 5m 4d on October 19, 2026.

Count the full years since the birth date, then the full months since the last birthday, then the days left over. This calculator counts those days from the last monthly anniversary of the birth date. When that day doesn't exist in a month, such as the 31st in April, it counts from the 1st of the next month.

Total Days Lived counts every day from your birth date to the Age as of date, with leap days included. Someone born May 15, 1990 has lived 13,306 days on October 19, 2026. Change the Age as of date to count up to another day.

The Next Birthday row tells you each time you click Calculate. It counts from the Age as of date, so leave that on today for today's countdown or set another day. On the birthday itself it shows the full wait for the next one, 365 or 366 days.

In years without February 29, it treats March 1 as the birthday. Someone born February 29, 2000 shows 24y 11m 30d on February 28, 2025 and 25y 0m 0d on March 1, and the countdown points to March 1. Legal rules differ by country, and some use February 28.

Yes. Set the Age as of box to any date on or after the birth date. Pick the day of a past event to see how old someone was then, or a future date to see the age they will reach. An as-of date before the birth date keeps Calculate grayed out.

This page answers how old someone is, in years, months and days from a birth date, plus a birthday countdown. To count the plain days or weeks between any two dates, such as a deadline or a trip, use the Date Difference Calculator instead.

Not directly. It shows years, months and days, plus total days lived and days to your next birthday. For total months, multiply the years by 12 and add the months, so 36y 5m is 437 months. For weeks, divide Total Days Lived by 7.

Calculate turns on once both boxes hold a full date and the birth date is not later than the Age as of date. A birth date in the future keeps it off. After you change either date, click Calculate again, since the result doesn't refresh on its own.

No. The calculator takes dates only, so there are no hour or minute boxes and no age in hours. Every result is counted in whole calendar days, which is also how most forms and age limits ask for an age.

Yes. It is free, with no account and no usage limit. Your birth date is kept only in this browser tab; it isn't stored and isn't sent to us. On the live site, Google Analytics counts page visits and ads load, but neither receives your dates.