Privacy Policy

All calculations on Calculator.hair happen in your browser. The numbers you enter are not transmitted to or stored on our servers. When you change inputs, they may appear in the page address so you can bookmark or share a result; that address stays on your device unless you share it.

Server logs

Like most websites, our hosting provider records standard request logs (IP address, browser type, page requested, time) for security and reliability. These logs are kept for a limited time and are not used to identify you.

Analytics

We use Google Analytics to understand how many people visit, which calculators they use and how they found us. Google Analytics records the pages you view (including the page address, which can contain the inputs shown in it), your approximate location, device and browser type, and how you arrived at the site. We use this only in aggregate to improve Calculator.hair. Google processes this data under its own privacy policy; you can see how Google uses data from sites that use its services and opt out with the Google Analytics opt-out browser add-on.

Cookies

Google Analytics sets first-party cookies (named _ga and _ga_*) to tell visits apart. We do not set advertising cookies. You can block or delete cookies in your browser settings, and the calculators keep working without them.

Contact

Questions about privacy: hello@calculator.hair.