Free Age Calculator - Exact Age in Years, Days & More

Calculate your exact age in years, months and days. See total days lived, weeks, hours and fun facts like heartbeats and breaths. Free online age calculator.

What Is Age Calculator?

An age calculator computes the exact difference between two dates — typically your birth date and today — expressed in years, months and days. While working out your age in years is trivial, calculating the precise number of months, weeks and days is surprisingly tricky because months have different lengths and leap years add an extra day every four years.

Beyond simple age, this tool also shows interesting statistics like your age in total weeks, total days and total hours. It can calculate the time between any two dates, making it useful for project timelines, event planning and historical research.

How to Use This Tool

  1. Enter your date of birth using the date picker.
  2. Your exact age in years, months and days is calculated instantly.
  3. View additional breakdowns: total months, total weeks, total days and total hours.
  4. Optionally enter a second date to calculate the duration between any two dates.
  5. See your next birthday countdown and the day of the week you were born.

Tips & Best Practices

  • The calculator accounts for leap years automatically, so February 29 birthdays are handled correctly.
  • Use the two-date mode to calculate durations for project planning, contract terms or event timelines.
  • Time zones can affect the result by a day — the calculation uses your local system date.

Common Use Cases

  • Calculating your exact age for official forms, applications or insurance documents.
  • Working out the duration between two dates for project planning or contract terms.
  • Finding the day of the week for a historical date or future event.
  • Counting down days to a birthday, anniversary or deadline.

Frequently Asked Questions

How do I calculate my exact age?

Enter your date of birth and the calculator instantly shows your exact age in years, months and days, plus total days, weeks and hours lived.

What bonus stats are available?

Your zodiac sign and next-birthday countdown are free for everyone. Premium adds estimated heartbeats, breaths taken, total minutes lived, leap year birthdays and an upcoming-milestones tracker.