Your costs stay in your browser.
You can use the calculator without an account, an email address or a signup.
Calculator entries
The calculator runs in your browser. We do not send your entered amounts to a server, save them in cookies or browser storage, or use them to identify you. Reloading the page clears your entries.
Tracking and forms
We do not use analytics, advertising pixels, affiliate tracking scripts, contact forms or embedded third-party widgets. The site uses system fonts and local scripts and styles. There are no accounts or newsletter signups.
Cloudflare Pages hosting
When you visit the public site on Cloudflare Pages, Cloudflare processes network information such as your IP address, requested URL and browser details to deliver and protect the site. These hosting and security records are separate from your calculator entries. See Cloudflare’s privacy policy for details. We do not enable Cloudflare Web Analytics or use visitor information for advertising.
Links to providers
Official source links open other websites. Those services receive normal connection information and have their own privacy and cookie policies. Our links suppress the referring page where your browser supports it.
Contact and future changes
No public email address or contact form is provided. We do not request personal information through this site. If we add analytics, forms or commission links later, we will update this notice and the relevant disclosures first.
Notice updated: 18 October 2026.