Age Calculator

Free online age calculator. Calculate your exact age in years, months, days, and total days from your date of birth.

How the Age Calculator works

The calculator subtracts your date of birth from the target date, then breaks the difference into years, months, and days while accounting for variable month lengths and leap years. It also computes the total elapsed days and the countdown to your next birthday.

Formula

Age = Target Date − Date of Birth

How to use the Age Calculator

  1. 1The age calculator is designed to be simple and fast.
  2. 2Enter your date of birth.
  3. 3See your exact age breakdown.
  4. 4Your result is shown immediately.

Examples

  • Born Jan 1, 1990 = 35 years, 7 months
  • Also shows total days and next birthday

Benefits

  • Completely free with no signup required.
  • Runs entirely in your browser for instant results and privacy.
  • Works on mobile, tablet and desktop.
  • Results can be copied with one click.

Frequently Asked Questions

Is the age calculator free to use?

Yes. The age calculator is 100% free, with no signup, no watermark and no hidden limits.

Does the age calculator store my data?

No. All calculations and processing happen locally in your browser. Nothing is uploaded to a server.

Does the age calculator work on mobile?

Yes. The age calculator is fully responsive and works on phones, tablets and desktop computers.

How is age calculated?

Age is calculated by finding the difference between your date of birth and the target date, accounting for months and days.

Can I calculate age difference between two people?

Yes. Enter one person's birth date and set the "age at date" to the other person's birth date to find the age difference.

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