Your inputs stay on your device
Everything you type — appliance figures, hours, your electricity price — is calculated in your browser. Nothing is sent to us. Your country, region and price choices are remembered in your browser’s localStorage so the calculator is ready next time; clear your site data to remove them.
Analytics
We use Cloudflare Web Analytics to count page views. It does not use cookies or local storage and does not track you across sites. See Cloudflare’s privacy policy at https://www.cloudflare.com/privacypolicy/.
Advertising
Pages may show ads served by Google AdSense. Google and its partners may use cookies or similar technologies to serve and measure ads, including personalised ads where you have agreed to them. You can manage personalised advertising at https://adssettings.google.com and learn more at https://policies.google.com/technologies/ads. Where the law requires consent (for example in the UK and EU), ads are only personalised after you consent.
Contact
Questions about privacy: use the contact details on tinyknack.com.
Changes
Last updated 9 October 2026.