Age Calculator

Find your exact age — and do any date math — in one private, lightning-fast place. No login, no tracking. Everything is calculated right here in your browser.

Enter your date of birth.
Defaults to today — change it to find your age on any date.
Affects how "today" is resolved.

All Date Tools

Private by design

Nothing you type ever leaves your device. Zero uploads, zero tracking.

Accurate

Handles leap years, month-length differences, and DST-safe day counts.

Free forever

No subscription, no sign-up, no limits. Always free.

Frequently asked questions

Is this age calculator free and private?
Yes. Every calculation runs entirely in your browser using JavaScript. Your date of birth and any dates you enter are never uploaded, stored on a server, or shared. There are no logins or accounts, and the dates you enter are never sent to us. Note: the site is supported by third-party ads, which may set their own cookies.
How do you calculate exact age?
We compare your date of birth to an "as of" date (today by default) and count complete years first, then the remaining whole months, then the leftover days — borrowing the correct number of days from the previous month when needed. We also handle leap years and variable month lengths so the result is exact.
Can I share my result with a link?
Yes. Every result updates the page's web address with your inputs, so you can copy the link (use the "Copy link" button) and share it. Opening that link reproduces the same calculation instantly — no account or database involved.
Which tools are included?
An exact age calculator, a date-difference calculator (time between two dates), a date add/subtract calculator, and a "days until" countdown. There are also quick guides for "how old am I" and "what day of the week was I born".