Privacy

Last updated: 13 October 2026.

Calculator inputs

Calculations happen in your browser. This version does not send calculator inputs to an application server, create user accounts or retain estimates after you close or reload the page. A downloaded CSV is saved on your device. Using Copy places the estimate on your clipboard.

Website hosting

The hosting provider may process page requests and technical information such as IP addresses for delivery and security. Access to a private preview may require the hosting platform's sign-in.

Advertising and analytics

This version has no advertising or analytics scripts. We will update this page and add any required consent controls before enabling those services.

External links

Links to suppliers or reference material lead to other websites, which have their own privacy policies.