About This Tool

Age Calculator is a free online tool that works out your exact age from your date of birth. Enter any birth date and it shows your age in years, months and days, the total number of days and weeks you have lived, the weekday you were born on, and a countdown to your next birthday.

You can also calculate your age on any other date — past or future — which is handy for forms, anniversaries, school and job applications, and planning ahead.

This is a small, independent tool provided free of charge, with no accounts and no sign-up. Everything runs locally in your own web browser; nothing you enter is uploaded or stored anywhere (see the Privacy page).