Privacy

Last updated: 3 October 2026.

Numbers you enter

With JavaScript on, results are calculated in your browser and nothing is sent to us. With JavaScript off, the form is sent to our server, which builds the result page and sends it back; the numbers are not saved. If you share a result link, the numbers are part of that link.

Accounts and advertising

There are no accounts and no advertising.

Analytics and cookies

We use Google Analytics 4 to count visits and to see which pages and calculators are used. It receives the page address with the numbers removed, the page you came from, your browser and device type, and an approximate location that Google derives from your IP address. Google states that Google Analytics 4 does not log or store IP addresses. Advertising features are off: advertising storage, ad personalisation and ad user data are always set to "denied".

• In the EEA, the UK and Switzerland, Google Analytics loads only after you click "Accept" in the banner.
• Elsewhere it loads by default. You can turn it off at any time with "Cookie settings" at the bottom of every page.

When it runs, Google Analytics sets two first-party cookies, _ga and _ga_ followed by an ID, which expire two years after your last visit. Declining removes them. Your choice is kept in your browser's local storage under gm-analytics, not on our server. To decide whether to ask first, the page reads your country from Cloudflare, which serves the site; it is not stored.

Hosting

The site is served by Cloudflare. Like any web host, Cloudflare processes technical request data (such as IP address and browser type) to deliver pages and protect the site.

Contact

Privacy questions: hello@gainsmath.com.