Age Calculator

Calculate exact age in years, months, days from date of birth.

About the Age Calculator

Our Age Calculator is the fastest and most accurate way to calculate your exact age — or anyone else's — down to the day, hour, and minute. Simply enter a date of birth, pick the target date (defaulting to today), and instantly see the result in years, months, days, weeks, and even total hours.

Whether you need to verify someone's age for a legal document, calculate how many days until your next birthday, or figure out how old a historical figure would be today, this tool handles every scenario with precision. It correctly accounts for leap years, varying month lengths, and timezone-neutral calculations, so the answer is always right.

The calculator is completely free, works on mobile and desktop, and requires no registration. Results appear instantly without any page reloads, making it the ideal everyday age tool.

🎂 Age Calculator

How to Use the Age Calculator

  1. Enter your date of birth — Click the date field and choose your birth date from the calendar, or type it in YYYY-MM-DD format.
  2. Set a target date (optional) — By default the tool uses today's date. You can change this to any past or future date.
  3. Click "Calculate Age" — Your age appears instantly in years, months, days, and weeks.
  4. Copy the result — Use the Copy button to copy the full result to your clipboard.

Features

  • Calculates exact age in years, months, days, weeks, and hours
  • Correctly handles leap years and varying month lengths
  • Calculate age on any custom date — past or future
  • Shows total weeks and days elapsed since birth
  • Instant results — no page reload required
  • Works on mobile, tablet, and desktop browsers
  • No registration or account required
  • 100% free to use with no usage limits

Frequently Asked Questions

Age is calculated by finding the difference between your date of birth and a target date (today by default). The result is expressed in complete years, remaining months, and remaining days, accounting correctly for leap years and different month lengths.
Yes! Use the "Calculate Age At" field to set any custom date. This is useful for legal checks, historical calculations, or planning future events.
Completely free — no registration, no limits, no hidden fees. Use it as many times as you like.
Yes. The calculator accounts for leap years automatically, so if you were born on February 29, it calculates correctly even in non-leap years.

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