Privacy
Short version: the numbers you type never leave your device.
Your calculations
Every figure is worked out by JavaScript running in your browser. Nothing you enter is sent to our server, written to a database, or logged. There is no form submission and no network request when you calculate. Close the tab and the figures are gone.
If you use the share button, the values are placed in a link that you choose where to send. We do not see it.
What we collect
This page is served as static files. Our web server keeps standard access logs — the page requested, the time, the browser's user agent and IP address — which are used to keep the site working and secure. Those logs contain no calculator values.
There are no advertising trackers, no third-party analytics scripts, and no cookies set by this site. The only external request the page makes is to Google Fonts for typefaces.
Changes
If we ever add analytics, it will be a privacy-respecting product that does not collect the figures you enter, and this page will be updated before it goes live.
Contact
Questions about this page go to Tech Media Daily.
Last updated 27 August 2026.