Copy and paste any piece of content, a blog post, product description, landing page copy, email or social post. The checker handles any length from a single paragraph to a full article.
The tool calculates your Flesch-Kincaid Reading Ease score, Flesch-Kincaid Grade Level, Gunning Fog Index and all supporting statistics in under a second.
Three score cards show your Reading Ease (0 to 100), Grade Level and estimated Reading Time. Colour-coded badges instantly show whether your content is Easy, Standard or Difficult to read.
The improvement panel gives specific, actionable advice, which sentences are too long, where passive voice is overused, whether your paragraphs are too dense and which words to simplify.
Paste your content into the box below and click Analyse. For best results, paste the full body text without navigation menus, headers or footer content.
Paste your content above and click Analyse Readability to get your Flesch-Kincaid score, grade level and improvement suggestions.
| Word | Count | Density | Frequency |
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Most successful online content reads at a 7th, 9th grade level, regardless of the audience's actual education. Even highly educated readers prefer clear, concise writing online. HubSpot, Backlinko and the world's top blogs consistently score between 60 to 70 on the Flesch Reading Ease scale.
Long sentences are the #1 cause of low readability scores. Aim for an average sentence length under 20 words. Vary your sentence rhythm, mix short punchy sentences (5 to 8 words) with medium ones (15 to 20 words). Never have three long sentences in a row.
Paragraphs on the web should be 2 to 4 sentences long, never more than 5. Each paragraph should contain exactly one main idea. Use subheadings every 300 words to break up the text and give readers visual "landing spots". White space dramatically increases completion rates.
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Launch ToolCommon questions about this free tool, answered clearly.
For a general audience, aim for a Flesch Reading Ease score of 60 to 70, roughly a grade 7 to 8 reading level. Simpler is usually better, even for expert readers who are skimming.
Not directly. Google has said it does not rank by readability scores. But clear, easy writing keeps people on the page and makes your content easier for AI to quote, so it helps indirectly.
Use short sentences and short paragraphs. Choose plain words and put the key point first. Break text with headings and lists. Read it aloud, if you run out of breath, the sentence is too long.