Home › Study tools › Age Calculator
yrs
Study tool

Age Calculator

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

Free foreverNo sign-upPrivate: runs in your browserUpdated November 2026
Age26 years

26 years, 5 months and 19 days

Total months317
Total weeks1,381
Total days9,668
Next birthdayin 193 days
Born on aMonday
Turning next27 on Sat, May 15, 2027
● calculated in 0.80 msruns in your browserupdated 07:35:37
The maths

Formula

This is the exact calculation the tool runs.

Age = Date − Date of birth, counted in full years, months, days
Borrow a monthWhen days are negative
Borrow a yearWhen months are negative
Leap yearsCounted automatically
Practice

Worked examples

Click "Try it" to load an example into the tool.

Born 1995

Date of birth: Tue, Mar 21, 1995Age on this date: Tue, Nov 3, 2026
31 years

School age check

Date of birth: Wed, Sep 1, 2021Age on this date: Wed, Mar 31, 2027
5 years

Leap-day birthday

Date of birth: Sun, Feb 29, 2004Age on this date: Tue, Nov 3, 2026
22 years
Step by step

How to use the Age Calculator

Pick your date of birth

Use the date picker or type it.

Choose the second date

Today by default. Change it to check age on a past or future date.

Read the result

Your age in years, months, days and other units.

Questions

Frequently asked questions

How is age calculated?

Full years are counted first, then remaining full months, then the remaining days.

What about leap-year birthdays?

People born on 29 February usually celebrate on 28 February or 1 March in normal years.

Can I check age on a future date?

Yes. Change the second date, for example to a school or job cutoff date.