Age Calculator — How Old Am I?

Free age calculator online. Calculate your exact age in years, months, days, hours, and minutes from your date of birth. How old am I today?

Calculate Your Age

How to Use

Enter your date of birth using the date picker.

Change "Age on Date" to calculate your age on a specific day, or leave it as today.

Click Calculate to see your exact age, next birthday countdown, zodiac sign, and more.

What is an Age Calculator?

An age calculator tells you exactly how old you are — down to the month and day — based on your date of birth. It also shows your age in total months, weeks, days, hours, and minutes. Additional details like your birth day of the week, zodiac sign, and next birthday countdown make it fun and informative. It's useful for forms, applications, milestone tracking, and curiosity.

Frequently Asked Questions

How is age calculated?
Age is calculated from your date of birth to the selected date (today by default) using exact year, month, and day differences, accounting for leap years and varying month lengths.
Can I calculate age on a specific date?
Yes. Change the "Age on date" field to any date to see how old you were or will be on that day.
Does it account for leap years?
Yes. PHP's DateTime handles leap years automatically, so February 29 birthdays are calculated correctly.
What is the next birthday countdown?
It shows how many days remain until your next birthday from the selected date. If your birthday is today, it shows zero days.
Can I calculate someone else's age?
Yes. Just enter their date of birth. The tool works for any person, past or present.

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