Free tool: get exact age in years, months, and days for forms and assessments

Lots of forms want “age in years, months, and days” or “chronological age as of [date]”—school assessments, eligibility forms, HR, research. Doing it by hand is easy to get wrong (leap years, month lengths). This free web tool does one thing: you enter birth date and “as of” date, it gives you the exact breakdown (years, months, days, total days). No sign-up, runs in the browser, so dates stay local. Handy for educators, clinicians, and anyone who has to fill “chronological age” on a form.