Readability Checker
Check readability scores including Flesch-Kincaid grade level and reading ease.
Paste your text above and you'll see readability scores from multiple formulas. You get Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog and more - all calculated instantly. No signup needed.
Many drafts are harder to read than the writer realizes. That's the gap this tool helps you close. If a general blog post scores at a college reading level, some readers may leave before they reach the main point.
What the Scores Actually Mean
Flesch Reading Ease
This one goes from 0 to 100. Higher means easier. A score of 60-70 is the sweet spot for web content. That's roughly an 8th-9th grade level, which might sound low but it's where most popular websites sit. Even professional writers with PhDs aim for this range online.
Flesch-Kincaid Grade Level
This converts your readability into a U.S. school grade. A grade level of 8 means an average 8th grader could understand it. For general web content, grades 6 to 8 often work well. Some respected writing uses short words and simple sentence structure without losing depth.
Gunning Fog Index
This estimates how many years of education someone needs to get your text. A Fog Index of 12 means you need about a high school senior's reading ability. For broad audiences, keep it under 10.
Coleman-Liau Index
This formula uses character count instead of syllables, which makes it faster and sometimes more reliable for certain text types. It gives you a grade level just like Flesch-Kincaid.
Readability Score Quick Reference
- 90-100: Super easy (5th grade) - basic instructions and children's content
- 80-89: Easy (6th grade) - conversational writing
- 70-79: Fairly easy (7th grade) - most blog posts and magazines
- 60-69: Standard (8th-9th grade) - the target for web content
- 50-59: Fairly tough (10th-12th grade) - business reports and journalism
- 30-49: Difficult (college level) - academic papers
- 0-29: Very difficult (graduate level) - legal and scientific writing
How to Actually Improve Your Score
The two biggest things that tank readability are long sentences and big words. Breaking a 35-word sentence into two shorter ones can bump your score significantly. Swapping "approximately" for "about" or "utilize" for "use" helps too.
But don't chase a number blindly. If you're writing for doctors or engineers, a higher grade level is expected. The point is matching your writing to your audience, not dumbing everything down to a 5th grade level.
How to Use
- Paste your text into the editor above.
- Check the Flesch Reading Ease score for a quick overview.
- Look at the grade level to see if it matches your target audience.
- Shorten sentences and swap complex words to improve your scores.
Frequently Asked Questions
How do I use the Readability Checker?
Paste your text and review the grade level, reading ease and sentence data. Use the results to decide what to edit first. Start with long sentences, hard words and paragraphs that feel heavy.
What readability score should I aim for?
For most web content, grade 6 to 8 is a good target. Technical, legal or academic pages may need a higher level. The best score is the one your real audience can understand without extra effort.
Should every page be written at a low grade level?
No. Match the audience and the task. A medical guide for patients should be simpler than a paper for specialists. Simple writing should keep the facts accurate.
How do I improve readability without dumbing it down?
Shorten long sentences and remove filler. Explain hard terms once, then use them consistently. Keep the idea intact, but make the route to it easier.
Does readability affect SEO?
Google does not rank a page by a Flesch score alone. Clear writing can still help because readers understand the page faster. That can support better engagement and fewer quick exits.
Why do readability formulas disagree?
Each formula weighs sentence length, word length and syllables differently. Treat the scores as a pattern, not a single verdict. If every score says the page is hard, it probably needs editing.