How do I calculate my exact age?

Enter your date of birth in the calculator above and click Calculate Age. The tool will show your exact age in years, months, and days, along with your total days lived and a countdown to your next birthday.

How are leap years handled in the age calculation?

Leap years are handled automatically. If you were born on February 29, the calculator uses March 1 as your birthday in non-leap years when counting age milestones.

Can I calculate how old I will be on a future date?

Yes. Use the 'Age on a specific date' section to enter any future or past date and see how old you were or will be on that day.

← Back to all tools

🎂 Age Calculator

Calculate your exact age in years, months, and days — plus next birthday countdown.

🎂

Enter Birthday

DATE OF BIRTH

CALCULATE AGE AS OF

Leave as today or enter any date

📊

Result

Enter your date of birth above and click Calculate Age.

📖

About This Calculator

This calculator determines your exact age using your browser's date engine. It correctly handles leap years, month-length variations, and daylight saving time. You can also calculate how old you were or will be on any specific past or future date using the "As of" field.

🎂 Handles leap years

📅 Past & future dates

✓ Zero server transmission

❓

Frequently Asked Questions

How is age calculated?

Age is calculated from your birth date to today's date, or to a target date you specify. The result reflects the exact completed years, accounting for whether your birthday has occurred in the current year.

Is time zone factored into the age calculation?

The calculation is date-only and does not factor in time zones. Both the birth date and target date are treated as calendar dates, giving a consistent result regardless of your location.

Can I see my age in months and days?

Yes. In addition to years, the calculator shows the precise breakdown of your age in years, months, and remaining days, giving you an exact measure of how old you are to the day.