Privacy Policy

The short version

Every calculator runs entirely in your browser. The numbers you enter are never sent to a server, logged, or shared.

If analytics is ever enabled, it will use privacy-respecting services such as Google Analytics 4 and Ahrefs Web Analytics to count anonymous usage events. Neither would receive anything you type into the calculators. Google Analytics 4 would set standard analytics cookies (_ga); Ahrefs Web Analytics is cookieless.

The hosting provider (Cloudflare) processes standard technical request logs as part of serving the site.

If you email us, we receive your email address and message, and use them only to respond.

How the calculators process information

All calculations — wax per candle, batch totals, fragrance oil weights, fragrance ratios, water-to-wax volumes, weight and volume conversions, batch costs, and wick sizing — are performed by JavaScript running locally in your browser. Calculator inputs (container volumes, wax types, candle counts, fragrance loads, margins, prices, and dimensions) are:

• never transmitted to any server by this site;
• never written into URLs, cookies, or browser storage;
• never sent to Google Analytics, Ahrefs Web Analytics, or any other service.

You can verify this yourself: the calculators make no network requests while you use them. If a future feature ever needs to send data anywhere, it will be strictly opt-in, disclosed here first, and never applied to inputs you enter without your explicit action.

Hosting

This site is served by Cloudflare Pages. Like essentially all web hosts, Cloudflare processes technical request logs (such as IP address, user agent, requested URL, and timestamps) to deliver pages, protect against abuse, and operate its service. This site does not use those logs to profile visitors, and calculator inputs are not part of any URL, so they never appear in request logs. Cloudflare's own handling of operational data is described in Cloudflare's privacy policy.

Analytics

No analytics software is installed on this site, and there is no advertising. If analytics is ever added, this section will describe exactly what is collected before it goes live.

Cookies

This site currently sets no cookies at all. If Google Analytics 4 is enabled in the future, it would set standard first-party cookies (_ga and related identifiers) to measure aggregate visits; Ahrefs Web Analytics sets none. The calculators themselves do not use cookies or browser storage — nothing you enter is stored anywhere on your device or ours.

Advertising (Google AdSense)

When advertising is enabled on this site, Google AdSense may serve ads and set advertising cookies (for example, to personalize ads and measure their performance). Google's use of advertising cookies is described in Google's advertising documentation, and you can control ad personalization in Google's Ads Settings.

No advertising is currently served on this site.

Error-report form

The Report an Error form runs entirely in your browser. When you submit it, the form composes an email addressed to the site owner containing the details you entered — either opening it in your own email app, or showing you the composed report to copy and send yourself. Nothing is uploaded to or stored by this site; the report only leaves your device if you choose to send the email. If you include your email address, it is used only to reply to your report.

Contacting us

If you email ianwelkins@gmail.com, we receive the address and content you send. It is used only to read and reply to your message, is not added to any mailing list, and is not shared with third parties.

Changes to this policy

If this policy changes, the change will be described on this page with an updated "last updated" date. Questions about anything here are welcome at the address above. See also our terms of use.

Last reviewed: 18 October 2026 by Ian.