How is age calculated exactly?

Age is calculated as the time elapsed from your date of birth to today's date, expressed in complete years, then remaining months, then remaining days. For example, if you were born on 15 March 2000 and today is 20 August 2026, your age is 26 years, 5 months, and 5 days.

Is this age calculator free?

Yes, completely free with no sign-up required. It works in your browser and your date of birth is never sent to any server.

Age Calculator

Q: Can I calculate age between two specific dates?

Yes. By default the calculator compares your date of birth with today, but you can change the second date to any date you want - useful for calculating age at a specific event, exam eligibility, or retirement date.

Enter your date of birth to calculate your exact age in years, months, and days.

Date of Birth

Age at Date (default: today)

Your Age

How to Use the Age Calculator

Select your date of birth in the first field.
Optionally, change the second date if you want your age at a specific date (by default it uses today).
Click Calculate Age — your exact age appears instantly in years, months, and days, along with total months, weeks, days lived, and the countdown to your next birthday.

Why Use an Age Calculator?

Calculating exact age by hand is tricky because months have different lengths and leap years add extra days. This calculator handles all of that automatically. People use it to fill official forms that ask for age in completed years, check eligibility for exams, jobs, or retirement, calculate a child's age for school admission, or simply find out how many days they have lived.

How Age Is Calculated

The calculator counts complete years first, then complete remaining months, then leftover days. Leap years (like 2024 and 2028) are fully accounted for, so the result is accurate to the exact day. Your data never leaves your browser — the calculation happens entirely on your device.

Frequently Asked Questions

Can I calculate age between two specific dates?

Yes — set the second field to any date, for example an exam date or a historical date, and the calculator will show the exact age on that day.

Does it account for leap years?

Yes, leap years are handled automatically, so February 29 birthdays and all date ranges are calculated correctly.

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