Age Calculator

Find your exact chronological age from your date of birth.

How to Use

  • Enter your date of birth.
  • The calculator will show your age as of today's date.
  • Optionally, select a different date to calculate your age on that day.

Enter a date or use the calendar icon.

Enter a date or use the calendar icon.

Your Age Is...

Enter a date of birth to begin.

Understanding and Calculating Your Age

Have you ever wondered, "How old am I, exactly?" While you might know your age in years, calculating it down to the exact day can be complex. An age calculator is a simple yet powerful tool that provides your precise chronological age based on your date of birth. This tool is perfect for anyone needing to know their exact age for official documents, health assessments, or simple curiosity.

How to Calculate Your Age Manually

Calculating your age seems simple, but accounting for months and days requires a few steps:

  1. Calculate Years: Subtract your birth year from the current year.
  2. Adjust for Months: Compare the current month to your birth month. If the current month is earlier, subtract one year from your total.
  3. Adjust for Days: If the months are the same, compare the current day to your birth day. If the current day is earlier, subtract one year from your total.

This method provides your age in years. Our date of birth calculator automates this entire process and further breaks it down into months and days for a more precise result.

Why Use an Age Calculator?

  • Accuracy: It eliminates manual errors, especially when dealing with leap years and varying month lengths.
  • Convenience: Get an instant answer without any mental math. Just enter your birthday and get the result.
  • Detailed Breakdown: See your age not just in years, but also in total months, weeks, days, and even minutes.
  • Future Planning: Use the "Age at the Date of" feature to determine your age on a future milestone, like a graduation or retirement date. You can even use it with our timer tool to countdown to an event.

Frequently Asked Questions (FAQ)

How do I calculate my age?

To calculate your age, subtract your birth year from the current year. Then, adjust for the month and day. If the current month and day are before your birth month and day, subtract one year. Our calculator automates this process for you.

What is chronological age?

Chronological age is the precise amount of time a person has been alive, measured in years, months, and days from their date of birth. It's the most common way to express age and is used in legal, medical, and social contexts.

Can I calculate my age on a future date?

Yes, our calculator allows you to enter an optional 'Age at the Date of' to find out how old you will be on any specific date in the future.

Does this birthday calculator account for leap years?

Yes, the calculation method correctly accounts for leap years by using precise date objects in JavaScript, ensuring your age is calculated accurately regardless of whether your birthday falls on February 29th.

The calculations are based on the standard Gregorian calendar, which is the most widely used civil calendar in the world today.