Your worksheet stays with you.
This site does not use analytics, advertising scripts, accounts or embedded video players.
Calculator data
Inputs are processed in your browser and kept only in the current page. The site does not send them to a server or store them in cookies or local storage. Exporting creates a CSV download on your device. Reloading restores the example inputs.
Page requests
This site is hosted on Cloudflare Pages. Your browser sends page and asset requests through Cloudflare. Cloudflare may process technical request information, including IP addresses, to deliver and protect the site. See Cloudflare’s privacy policy for its practices. Calculator inputs are processed locally in your browser and are not included in those page requests.
External links
Opening Steam, YouTube, Google or another external source takes you to that service, where its own policies apply. This site uses links instead of automatically loading third-party video players.
Changes to this notice
If analytics or advertising services are introduced, this notice will be updated to describe them and any applicable consent choices. No advertising provider is currently loaded.
Last reviewed: 22 September 2026.