Public calculator use
The public calculators do not require an account. Values entered into ordinary calculators are processed in your browser unless a tool clearly needs a server or public-data lookup, such as a postcode or railway-station checker. In those cases the lookup value needed to obtain the result is sent to the relevant service.
Analytics
Google Analytics 4 is optional and is not loaded until you choose to allow analytics through the site’s fallback cookie control.
Advertising
Direct sponsor banners may be shown, but Google AdSense remains blocked until the certified Google CMP setup is confirmed.
Your privacy choices
You can revisit the optional analytics choice from Cookie settings.
Third-party services
Where enabled, Google may process data for Analytics and AdSense under the choices you make in the consent interface. The consent message identifies the advertising vendors involved. You can read more in Google’s Privacy Policy.