Readability Checker
Find out how easy your text is to read. Analyze reading ease, grade level, sentence complexity, word length and other useful writing statistics in seconds.
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Readability results
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What do your readability scores mean?
The Flesch Reading Ease score ranges from 0 to 100 in its usual interpretation. A higher score generally means the text is easier to read. The grade-level scores estimate the education level needed to understand the writing.
| Flesch score | Reading difficulty | General interpretation |
|---|---|---|
| 90–100 | Very easy | Simple, short text |
| 80–89 | Easy | Accessible everyday writing |
| 70–79 | Fairly easy | Generally easy to understand |
| 60–69 | Standard | Typical general-audience writing |
| 50–59 | Fairly difficult | More demanding text |
| 30–49 | Difficult | Complex or technical writing |
| 0–29 | Very difficult | Very complex writing |
How does a readability checker work?
A readability checker evaluates characteristics of written content that can influence how easily people understand it. Common factors include sentence length, word length, syllable count and the proportion of complex words.
Flesch Reading Ease
The Flesch Reading Ease formula estimates how easy a passage is to read. It uses average sentence length and average syllables per word. Higher scores indicate easier text.
206.835 − (1.015 × average sentence length) − (84.6 × average syllables per word)
Flesch-Kincaid Grade Level
This formula estimates the U.S. school grade level associated with understanding a passage. For example, a result around 8 indicates an approximate eighth-grade reading level.
(0.39 × average sentence length) + (11.8 × average syllables per word) − 15.59
Gunning Fog Index
The Gunning Fog Index estimates the years of formal education generally needed to understand a text. It considers average sentence length and the percentage of complex words.
Automated Readability Index
The Automated Readability Index uses average characters per word and average words per sentence to estimate a reading grade.
How can you improve readability?
- Use shorter sentences when a sentence contains several ideas.
- Replace unnecessarily complicated words with familiar alternatives.
- Break long sections into smaller paragraphs.
- Use descriptive headings to organize your content.
- Prefer active voice when it makes a sentence clearer.
- Explain technical terms when writing for a general audience.
Are readability scores always accurate?
No. Readability formulas are useful indicators, not complete measures of writing quality. They do not fully understand context, meaning, tone, logic, audience knowledge or the accuracy of information. A short text may also produce unstable results. Use the scores as guidance and review the writing yourself.
Does this tool support every language?
Syllable-based formulas such as Flesch Reading Ease, Flesch-Kincaid and Gunning Fog are intended primarily for English. This tool uses an approximate English syllable counter, so those results may be inaccurate for other languages. Character-based measures may be useful as rough indicators, but they are not universally valid across languages.
Frequently asked questions
What is a good readability score?
For many general-audience texts, a Flesch Reading Ease score around 60–70 is a useful target. The ideal score depends on your audience and the purpose of your writing.
What does a Flesch-Kincaid grade of 8 mean?
It indicates an estimated U.S. eighth-grade reading level. It is an approximation rather than a guarantee that every eighth-grade reader will understand the text.
Can I check an article or website page?
Yes. Copy the article or page text and paste it into the checker. The tool will analyze the text you provide.
Is this readability checker free?
Yes. You can use the tool without registration or payment.
Is my text saved or uploaded?
No. The analysis runs in your browser. The text is not sent to our server by this tool.
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