Calculators

Age Calculator

Runs in your browser

Exact age

yr mo d

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Days

Next birthday in days

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What is the Age Calculator?

The Age Calculator finds the exact time between a birth date and another date. It can show age in years, months, and days, which is useful when a simple year count is not precise enough.

Age is not just the current year minus the birth year. The month and day matter. Someone born on December 20, 2000 is still 24 on June 5, 2025, even though 2025 minus 2000 equals 25.

Use it for forms, applications, school records, event planning, age checks, and personal milestones where the exact date matters.

How to use the Age Calculator

  1. Enter the birth date or starting date.
  2. Choose the date you want to calculate age on, or leave it as today.
  3. Read the exact age in years, months, and days.
  4. For legal or official use, confirm the result against the rules used by the organization requesting it.

Frequently asked questions

Because a birthday may not have happened yet in the current year. Months and days make the result precise.
Yes. Change the comparison date to see age on that specific day.
It is useful for checking, but official forms may follow their own rules. Always confirm important requirements.