Advertising Policy
How advertising on Checked Math is placed and labelled, and why it can never change a formula, a result or an explanation.
How the site is funded
Checked Math is free to use, with no account and no paywall. It is supported by advertising served by Google AdSense. There is no sponsored content, no paid placement and no affiliate link in any calculator or explanation.
Results stay independent
Advertising never determines a formula, changes a result, selects a source, introduces a favourable product assumption or alters an explanation. Calculator and editorial decisions are made separately from ad placement, and the advertiser does not see what you type.
Where ads may appear
- Between sections of a calculator’s explanation, and in the side column beside the article on wide screens.
- Never inside the calculation sheet, never above or beside the inputs, the answer or the working, and never pushing them out of view.
- Never on error pages, empty search results or the site’s policy pages.
- Each ad is labelled “Advertisement” and styled differently from calculator controls, results and explanations.
- Space for an ad is reserved before it loads, so the page does not jump while you read.
Your choices
Personalised advertising depends on cookies set by Google. The Privacy Policy and Cookie Policy explain what they do and how to opt out through Google’s Ads Settings, and visitors in regions that require consent are asked before personalised ads are used.
Reporting a problem with an ad
If an ad is misleading, offensive or covers part of a calculator, tell us through the contact page with the page address and what you saw. Ads that break these rules are blocked.