Privacy Policy
Effective 2026-10-02. Updated 2026-10-03 (Google Analytics added).
Calculations stay in your browser
Every number you type into a calculator is processed by JavaScript on your own device. It is never sent to our servers, stored, or logged.
Analytics
We use two analytics services to understand which pages are useful:
- Cloudflare Web Analytics — cookie-free; records aggregate page views, referrer, country and browser type.
- Google Analytics 4 — sets first-party cookies (
_ga,_ga_*) to count visits and sessions. Visitors in the EEA, UK and Switzerland are not tracked with cookies unless they click "Accept". Everyone else can click "Decline" on the banner. Advertising features are disabled. Google's processing is described in its partner sites policy.
To change your choice, clear this site's stored data in your browser; the banner will appear again.
Hosting
The site is served by Cloudflare Pages. Cloudflare may process IP addresses in server logs for security and delivery; see Cloudflare's privacy policy.
If you email us, we use your message and address only to reply and delete correspondence when it is no longer needed. Please do not send personal health information.
No accounts, no advertising cookies
We do not offer accounts and currently show no ads. If that changes, this policy will be updated first.
Contact
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