Privacy Policy

The short version: this site has no accounts, no sign-up forms and no tracking cookies, and it does not collect personal information to sell — there is nothing to sell.

What is collected

• Hosting logs. The site runs on Cloudflare. Like every host, it keeps standard server logs (IP address, browser type, pages requested) to keep the site running and secure.
• Visit counts. We look at privacy-friendly, aggregate visit counts — how many people saw a page, roughly where in the world — with no cross-site tracking and no advertising cookies.
• Email you send us. If you write to [email protected], your address and message are used only to read and reply. They are never shared or sold.

What is not collected

No accounts, no passwords, no payment details, no forms that store anything. The calculators run entirely in your browser — the sizes you enter are not sent to us.

Advertising

The site carries no advertising today. If that changes, this page will say what runs and what it collects before the first ad appears.

Other sites

Links out — to forums, makers and shops — lead to places with their own privacy policies.

Questions about this policy: [email protected]. Last updated November 12, 2026.