Age Calculator

Select your birth date, then tap Calculate to see your age in years.

Birth date

Result
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How this calculation works

What each input means

Birth date — Calendar date used as the start of the interval.

Formula used

Computes whole years between the birth date and today: subtract calendar years, then subtract one if the birthday has not yet occurred this year.

Uses the browser’s local date; does not account for time zones across midnight.

How this result is estimated

This age-from-birthdate calculator applies the formulas described on this page to the values you enter. Outputs are not financial, tax, legal, or medical advice.

Inputs are user-provided and may include rounding.
Where accuracy, eligibility, or obligations matter, rely on official disclosures and licensed professionals.

Last reviewed: 2026-04-17

Frequently asked questions

Is this calculator result exact?

It is an estimate based on your inputs and may differ from official or provider-specific calculations.

Does this site provide financial, tax, or legal advice?

No. Each tool applies explicit formulas to values you supply. Financial, tax, and legal conclusions belong with licensed professionals and official documents.

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