How does the age calculator work?

The calculator subtracts your date of birth from today's date or a selected target date. It accounts for leap years and month lengths to return exact years, months and days.

Can it calculate my age on a future date?

Yes. Enter any target date and the tool will show your age on that day along with detailed time units.

Does the calculator show next birthday information?

Yes. It displays how many days remain until your next birthday based on the selected reference date.

Age Calculator

Results

Enter your date of birth to begin.

Understanding Age Calculation

What is chronological age?

Your chronological age is the time that has passed since the moment you were born. It is measured in years but can also be expressed in months, days, hours or even seconds.

How this calculator computes your age

This tool compares your birth date with today’s date (or any selected target date). It accounts for leap years, varying month lengths, and calendar transitions to return an exact age breakdown.

Age in years, months, and days

Your age is displayed as a combination of years, months and days for maximum clarity. This format is especially helpful for official forms, school registrations, or medical records.

Why detailed time units matter

Seeing your age in weeks, hours or minutes helps understand how rapidly time progresses. It is also useful for milestones like pregnancy tracking, infant growth timelines, and age-based eligibility requirements.

Next birthday countdown

The tool also calculates how many days remain until your next birthday, making it easy to plan celebrations or personal events.