Advertising and affiliate disclosure

How this site may earn money, and the rules it follows when it does.

Last revised 3 Oct 2026.

Current status

Display advertising: not currently shown.
Affiliate links: none at the moment.
Direct sponsorships: none at the moment.

The site currently earns nothing from its pages. This page describes the rules that will apply if that changes.

Rules we follow

Always labelled. Ads are marked “Advertisement”; affiliate and sponsored items are marked “Sponsored”. Affiliate links appear only where they are genuinely relevant to the tool you’re using.
Never in the way. Advertising is kept out of the calculator itself and away from its buttons, with reserved space so the page doesn’t jump while ads load.
Never changes results. Advertisers, sponsors and affiliate partners have no influence on any calculation, formula or explanation.
Marked for search engines. Paid links carry rel="sponsored".
No extra cost to you. If you buy through an affiliate link we may earn a commission; the price you pay is the same.

Your choices

See the privacy policy for how advertising and analytics use data and how to manage your preferences. Interested in advertising? See Advertise with us.