Age Calculator
Exact age in years, months and days
Pick a date of birth to see the exact age
Change “Age at” to see the age on any other date.
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Age Calculator – Exact Age in Years, Months & Days
Find your exact age in years, months and days, plus total days, weeks and hours lived and the countdown to your next birthday. Free and private.
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What is Age Calculator?
Enter a date of birth and get the exact age in years, months and days, along with the total months, weeks, days, hours and minutes lived, the weekday of birth, and how many days remain until the next birthday. Change the “Age at” date to see how old someone was (or will be) on any other day. Leap years and month lengths are handled correctly, and everything is calculated in your browser, so the dates you enter are never uploaded.
- age
- birthday
- date of birth
- date calculator
- days lived
Features
What you get with Age Calculator.
Exact Age
Years, months and days, with leap years and month ends handled correctly.
Age on Any Date
Change the “Age at” date to calculate age in the past or the future.
Birthday Countdown
See the weekday you were born and how many days remain until your next birthday.
Private
Calculated in your browser. Dates are never sent anywhere.
How to use Age Calculator
Follow these steps to get the best results.
Enter a date of birth
Use the date picker or type the date. The age updates immediately.
Pick a different “Age at” date
Useful for eligibility checks, such as age on the first day of a school year or on a deadline.
Read the totals
Months, weeks, days, hours and minutes lived are shown below the exact age.
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Frequently asked questions
Common questions about Age Calculator.
The calculator counts full years and then full months from the date of birth, and the days left over after that. If the birth day does not exist in a month (for example the 31st), the month is treated as complete on that month’s last day.
The exact age is still counted from the real date of birth. For the “next birthday” countdown, a February 29 birthday is observed on February 28 in years that are not leap years.
Yes. Change the “Age at” date to any day after the date of birth. This is handy for school cut-off dates, age limits and legal deadlines.
They are calculated from whole days (24 hours per day), because the tool uses dates without a time of birth. Treat them as a close figure rather than to-the-minute precision.
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