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Age Calculator

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

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Browser workspace

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A quick start

How to use it

  1. Select your date of birth.
  2. Optionally set “as of” a specific date.
  3. See exact years, months, and days.
  4. Compare the calendar breakdown with total elapsed days.
Examples, details, and limitations
Before you go

Common questions

Does this account for leap years?

Yes. Calendar month anniversaries are clamped to the last valid day of each month. February 29 anniversaries use February 28 in non-leap years.

Can I calculate age on a past or future date?

Yes. Change the “Age as of” date to compute age on any day.

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