YouLogicalFallacyIs explains reasoning errors with examples linked to each logical fallacy.
LogicalFallacies
Logical Fallacies lists errors in reasoning with definitions and examples to help readers identify them in arguments.
About LogicalFallacies
LogicalFallacies.org is a reference site that lists errors in reasoning with definitions and examples. It covers formal fallacies, where the error is visible in the argument's form, and informal fallacies, where the conclusion is not supported by the premises. The site states it includes 70 fallacies (8 formal and 62 informal) and 37 cognitive biases.
A Fallacy Detector tool lets users paste text to identify logical fallacies; the homepage shows a "Try free" link for it. The site also lists four tools for exploring fallacies and biases. Content is in English. Pricing and the detector's accuracy or review process are not described.
Key features
- Lists 70 logical fallacies with definitions and examples
- Separates 8 formal and 62 informal fallacies
- Fallacy Detector accepts pasted text to identify fallacies
- Includes 37 cognitive biases
- Offers 4 tools for exploring fallacies and biases
Best for: Students, writers, debaters, and anyone who wants to identify or study reasoning errors in arguments.
Good for
- Covers both formal and informal fallacies with definitions and examples.
- Provides a Fallacy Detector that identifies fallacies in pasted text.
- Includes a separate section of 37 cognitive biases.
Watch out for
- Content is available only in English.
- Pricing details for the Fallacy Detector are not provided; the homepage shows a "Try free" link.
LogicalFallacies at a glance
- Website
- logicalfallacies.org
- Category
- Education & Learning › History & Humanities
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
LogicalFallacies alternatives
Tools and sites you could use instead, ranked by how closely they match.
The Internet Encyclopedia of Philosophy lists common logical fallacies with brief explanations and examples.
Fallacy Files archives writing about logical fallacies and related weblog posts.
Philosophy Bro explains complex philosophical ideas in approachable language for readers.
1000-Word Philosophy publishes concise essays on philosophical questions, theories, thinkers, and arguments.
LibreTexts Philosophy introduces fundamental questions about existence, knowledge, values, reason, mind, and language.
Popular in History & Humanities
Well-known listings from the same topic.
Stanford Encyclopedia of Philosophyplato.stanford.edu/index.htmlPessimistsArchivepessimistsarchive.orgGovTrackgovtrack.usVGA Museumvgamuseum.infoABookOfCreaturesabookofcreatures.comU-boat Archiveuboatarchive.net
LogicalFallacies FAQ
What is a logical fallacy?
The site defines it as a misconception resulting from a flaw in reasoning, or a trick or illusion in thoughts that often succeeds in obfuscating facts or truth.
How many fallacies are listed?
The site lists 70 fallacies: 8 formal and 62 informal.
What is the difference between formal and informal fallacies?
Formal fallacies are errors visible in the argument's form and are non sequiturs. Informal fallacies have conclusions not supported by the premises, creating an unpersuasive or unsatisfying conclusion.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.