About Age Calculator

Age Calculator is a small, focused utility site: one main tool, done well, plus two closely related tools. It calculates age from a date of birth in years, months, and days, shows total time lived, the day of the week you were born, and a countdown to your next birthday.

What you get here

• Instant results — enter your dates and the answer updates as you type.
• Clear totals — age in years, months, and days, plus total months, weeks, days, hours, minutes, and seconds.
• Leap-year handling — 29 February birthdays are handled plainly, with a note when the next birthday is a leap-year birthday.
• Private by design — no sign-up, and nothing you enter leaves your browser.
• Fast on mobile — a clean, simple layout that works well on a phone.

What it is not

This site does not store personal data or replace an official record. Results are based only on the dates you enter, and are for general information only. See the Privacy Policy for how little data this site handles — by design, almost none.

Related tools

• Date Difference Calculator — Years, months, and days between any two dates.
• Days Between Dates Calculator — Total days, weeks, and months between two dates.
• About — What this site is and how it works.