How Is Age Calculated?

While calculating age in just years seems simple, finding the exact breakdown of years, months, and days is more complex. This calculator determines your age by measuring the time elapsed between your date of birth and the current date. It accurately accounts for the varying number of days in each month and for leap years to provide a precise result.

How to Use This Calculator

Using the calculator is easy. Simply use the date picker to select your date of birth and click the "Calculate Age" button. The calculator will display your age in multiple formats.

Interesting Facts About Time and Age

• A "year" can have different meanings. A calendar year is 365 or 366 days, but a tropical year (the time it takes Earth to orbit the Sun) is approximately 365.24 days. This is why we have leap years.
• Calculating your age in months is not as simple as multiplying years by 12, because months have different lengths. This calculator navigates this complexity by stepping through the calendar month by month from your birth date.
• The countdown to your next birthday shows how time perception can be framed in different ways, either by looking back at time lived or forward to future milestones.