About

About Age Calculator

Age Calculator was built to answer a question that's surprisingly fiddly to work out by hand: exactly how old is someone, in years, months, and days, accounting for leap years and varying month lengths.

Our approach

The calculator runs entirely in your browser - there's nothing to upload, nothing sent to a server, and results appear instantly as you enter a date. It focuses on giving a genuinely exact answer, along with a few related details people often want alongside it: total time lived, the countdown to the next birthday, and zodiac signs.

Who it's for

• Anyone who wants their exact age, or someone else's, down to the day.
• People checking age eligibility for a program, competition, or cutoff date.
• Anyone curious how old they were - or will be - on a specific date.

Get in touch

Questions, feedback, or suggestions are always welcome - visit the Contact Us page for details.