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Age Calculator

Enter a birth date to calculate an exact age as of today or another date.

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HOW TO USE IT

How to use the Age Calculator

  1. Enter the date of birth.
  2. Optionally choose a different “age on” date.
  3. Calculate the age in years, months and days.
WHY IT HELPS

What this tool is useful for

Age is not always just the difference between two years. Months and days matter when a birthday has not occurred yet in the comparison year.

PRACTICAL EXAMPLES

Common ways to use it

Forms

Check an exact age before completing an application.

Milestones

See how long until the next birthday.

Date questions

Calculate age on a specific historical or future date.

COMMON QUESTIONS

Age Calculator FAQ

Can I calculate age on a past date?

Yes. Change the “Age on” date to the date you want to use.

Does it handle leap-year birthdays?

The calculation uses calendar dates and works with valid leap-day birth dates.

Is the date saved?

No. The dates are processed in your browser.

KEEP GOING

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SDS tools are provided for general informational and planning purposes. Verify important financial, tax, security or business decisions with the appropriate source or professional.