Disclaimer

Checkout Cop is an independent tool and is not affiliated with, endorsed by, or operated by any government agency, the National Institute of Standards and Technology (NIST), the U.S. Department of Agriculture, or any retailer. Tolerance checks are based on published NIST Handbook 133 and Handbook 130 standards as of September 22, 2026, which may be updated or superseded; always verify current requirements with your state weights and measures agency.

Checkout Cop does not provide legal advice. A “violation” result is an estimate based on measurements you supplied and confirmed, not an official determination: only your state weights and measures agency can make that determination.

Measurement accuracy depends on your own scale and your own technique. Checkout Cop is not responsible for the accuracy of user-supplied readings.

Checkout Cop suggests what to say and which agency to contact. It never files, sends, or submits anything for you; you are solely responsible for anything you submit. Submitting a complaint does not guarantee any investigation, refund, or outcome.

Report only what you have personally and accurately observed: knowingly submitting false information to a government agency may carry legal consequences for you, independent of this app.

Checkout Cop does not publish or rank retailers based on user reports.

The real-case pages on this site state numbers reported in public news coverage and the legal tolerance math that applies to them. They are not a finding of fact, a legal conclusion, or an accusation against any named brand or retailer. See each case page for its sources.