Privacy policy

Last updated: November 2026.

This policy explains what happens to your data when you use pooldosecalculator.com. In short: the numbers you type into our calculators never leave your browser, and the site is funded by advertising that uses cookies.

Calculator data

All calculations run in your browser. Your pool volume, test results and other inputs are not sent to our servers. If you choose "Save as my pool", your volume is stored in your browser's local storage on your device only. You can delete it at any time by clearing your browser data.

Emails you send us

If you email us, we use your address and message only to reply and to fix the issue you report. We don't sell or share them for marketing.

Advertising

We use Google AdSense to show ads. Google and its partners may use cookies to show ads based on your visits to this and other websites. Where required by law, such as in the European Economic Area, the UK and Switzerland, you will be asked for consent first. You can opt out of personalized advertising in Google's Ads Settings. Learn more about how Google uses cookies in advertising.

Hosting and analytics

The site is hosted on Cloudflare, which may process technical data such as IP addresses to deliver and protect the site. We may use privacy-friendly, aggregated analytics to understand which pages are useful; these do not identify you.

Children

This site is intended for adults and we do not knowingly collect information from children.

Your rights

You can ask us to access, correct or delete personal data we hold about you (in practice, only emails you have sent us) by writing to hello@pooldosecalculator.com.

Changes

We will post any changes to this policy on this page with a new date.