Privacy notice

Last updated: 16 August 2026.

Calculator data

Calculator inputs are processed in your browser by the site JavaScript. The static calculator code does not need to send your measurements to a server.

Analytics and advertising

This replacement build does not include active Google Analytics or AdSense tags. If those services are enabled at launch, this notice and the consent setup must reflect the live configuration, including any cookies or identifiers used by those providers.

Contact

If you email the site, the information in your message will be used to respond to your enquiry.

Changes

This notice should be reviewed whenever tracking, advertising, forms or other third-party services are added.