Last updated 30 August 2026.
Your calculations never leave your browser
The calculator is a static page with a script attached. Every figure you type is processed on your own device, in JavaScript, and is never sent to this site or anywhere else. There is no server that could receive it: the site is a set of static files. Nothing you enter is stored, logged, or retained — closing the tab discards it.
What is collected
- No cookies. The site sets none, and there is no consent banner because there is nothing to consent to.
- No accounts, no tracking pixels, no advertising.
- Standard hosting logs. The site is hosted on Cloudflare Pages, which records ordinary request information — IP address, timestamp, requested URL, user agent — for delivery, security and abuse prevention. These logs are handled by Cloudflare under its own policies and are not used to build any profile of you.
If you email us
Anything you send to the address on the contact page is kept only as long as it takes to answer you and to fix anything you have reported. Please do not include tax identification numbers or other sensitive personal details — nothing about a correction or a question requires them.
Changes
If this policy changes, the date at the top changes with it. Material changes will be described here rather than made quietly.