About the Age Calculator

An age calculator works out exactly how old someone is from their date of birth, expressed in years, months, and days rather than just whole years. It correctly accounts for leap years and differing month lengths, which is where manual counting usually goes wrong.

Enter a birth date (and optionally a target date) to get the precise age and often the total days lived. It is useful for forms, eligibility checks, anniversaries, or simply satisfying curiosity.