Privacy Policy

Last updated: October 11, 2026

The short version

• No accounts, no sign-up. You never create a login to use the calculators.
• Nothing is uploaded. Every calculation runs in your browser — your measurements never leave your device.
• No tracking cookies are set by the calculators themselves.

Advertising & analytics

If advertising is enabled on this site, ad partners may set cookies to serve and measure ads, subject to their own policies and applicable consent requirements (including a consent banner for visitors in the EEA/UK). We will list partners here when ads are enabled. Site analytics, when used, are aggregate and privacy-respecting.

Affiliate links

Some outbound links to retailers may be affiliate links (see Affiliate disclosure). Clicking them does not change your price.

Contact

Privacy questions: Contact page.