Privacy Policy
Last updated 15 November 2026. This site is a set of calculators, not a service: no accounts, no sign-ups, nothing to log into.
What the calculators do with your numbers
Every calculation on this site runs entirely in your own browser. The numbers you type are never sent to a server, stored in a database or seen by me. Calculator state is reflected in the page URL (so you can bookmark or share a result) — that URL lives in your browser and goes only where you send it. Nothing is written to cookies or local storage by the calculators.
Hosting logs
The site is served by Cloudflare Pages. Like any web host, Cloudflare processes standard request data (IP address, browser type, the page requested) to deliver the site and protect it from abuse. I do not receive individual visitor logs from this.
Fonts and external requests
The site's fonts are hosted on this domain — your browser does not contact Google Fonts or any other font service. The only external links on the site are the source and profile links; clicking one takes you to that site under its own privacy policy.
Advertising
This preview build carries no advertising and sets no advertising cookies. When advertising is enabled on this site, Google may set ad cookies to serve and measure ads, as described in Google's own advertising privacy documentation; this policy will be updated in present tense when that happens.
Analytics
This build runs no analytics scripts. If privacy-respecting aggregate analytics are added at launch, they will be described here before or as they are switched on — the policy is kept truthful to the build it ships with.
Contact
If you email me, I receive your address and message and use them only to reply. I do not sell, rent or share personal information. Questions about this policy: ianwelkins@gmail.com.