Cookie Policy
Cookies are small files stored by your browser that help websites function and understand usage.
Essential cookies
Essential browser storage supports security, remembers your cookie preferences and enables limited anonymous operational counts for calculator use, emailed-result outcomes, ratings and affiliate-link clicks. A random session identifier and first-touch source labels last only for the browser-tab session and are not tied to a name or email address.
Analytics cookies
If you allow Analytics, Google Analytics is used to understand aggregated traffic and improve the calculator. Google Analytics may use cookies or similar identifiers to distinguish visits and report usage. Detailed anonymous calculator outputs may also be stored for aggregate product and content planning. Email addresses and names are not included in the analytics event dataset.
Advertising cookies
If you allow Advertising, the Meta Pixel may use cookies and online identifiers to measure AMP'D 12V advertising and record page views plus calculator start, completion and successful emailed-result events. Detailed calculator inputs and email addresses are not sent to Meta.
Managing cookies
Choose Accept all, Essential only or Customise in the cookie notice. Customise lets you control Analytics and Advertising separately. Your choice expires after 90 days, and you can change it sooner through Cookie settings in the website footer. Blocking optional cookies does not stop you using the calculator or receiving an emailed result.