Privacy policy

Short version: no accounts, no forms that store what you type, and no advertising or analytics cookies until you accept them where the law requires consent.

What we collect

• Server logs: IP address, page, time and browser, kept for up to 30 days for security and to enforce API rate limits.
• Calculator inputs are part of the page address when you submit the form. We don't store them beyond the server log.
• Your privacy choice is stored in your browser (a first-party cookie named consent) for 12 months.

Advertising and analytics

When enabled, we use Google AdSense for ads and Google Analytics 4 for anonymous traffic statistics. In the European Economic Area, the UK and Switzerland these load only after you choose Accept. Elsewhere they load by default and you can opt out with the “Privacy choices” link in the footer. Google's use of data is described in How Google uses information from sites that use its services.

Affiliate links

Some pages may carry affiliate links, marked as such. The merchant may set its own cookies after you click.

Your rights

You can ask what we hold about you or ask us to delete it: [email protected].