How to use Age Calculator
- Type or pick your date of birth. The age is worked out as of today.
- For your age on another date (an exam, a visa, a job advertisement), change "Age on" to that date.
- Read the years, months and days, the total days, the weekday you were born and the countdown to your next birthday.
- Copy or share the result.
Why use Age Calculator
Exact age
Years, months and days, with month ends clamped the way birthdays work: someone born on 31 August turns a month older on 30 September.
Age on any date
Forms often ask for your age on a fixed date; set "Age on" and the answer changes.
Next birthday
The days left and the weekday it falls on, with leap-day birthdays kept on 28 February in other years.
Hijri age
Your age in the Islamic calendar as well, which runs about 11 days shorter a year.
About this tool
An age calculator turns a date of birth into an exact age: not just the years, but the months and days since the last birthday, the total days lived, and the day of the week you were born. It matters wherever a form asks for age on a particular date, in school admissions, visa applications, competitive exams, sports categories and job advertisements with an age limit, where a day can make the difference.
The age is counted the way birthdays are: a year passes on the same date the next year, a month on the same day of the next month, and when that day does not exist (the 31st in a 30-day month, 29 February in a common year) the last day of the month counts. Because the Hijri year is 354 or 355 days, a Hijri age runs ahead of a Gregorian one by about a year every 33 years, which is why some documents show both.
Frequently asked questions
How is my age worked out?
Whole years since your birthday, then whole months since the last one, then the days left over, exactly as birthdays fall. The total days lived are shown too.
I was born on 29 February. When is my birthday?
In years without a 29 February, the calculator uses 28 February, so you turn a year older then; in leap years, on the 29th.
Can I find my age on a past or future date?
Yes. Change "Age on" to that date; forms for exams, visas and jobs usually name the date that counts.
What is my age in the Hijri calendar?
The result shows your Hijri age in years and months, from the Umm al-Qura calendar. It is a little higher than your Gregorian age, since Hijri years are shorter.
How many days old am I?
The calculator shows your age in years, months and days, and also as a total number of days, weeks and months, counted up to today or any date you choose.
Is this age calculator free online?
Yes. It is free online with no sign-up, and your date of birth is used only on your device.