Writing tool
Readability Checker
Check how easy your text is to read and find sentences that may need shortening.
Readability level
Add text to calculate the reading level.
Sentence review
Sentences longer than 25 words are highlighted for review.
How to use readability scores in a real editing pass
Readability Checker estimates two common measures: Flesch Reading Ease and Flesch-Kincaid Grade Level. It also highlights sentences longer than 25 words, which are often the first place readers lose their place. Paste a finished section rather than a single paragraph, then use the scores to decide whether the language matches the audience you have in mind.
These numbers are calculations, not an editor. The syllable estimate can be thrown off by names, acronyms, technical terms, and unusual punctuation, and very short samples are especially unstable. In our testing, a sample of at least 100 to 150 words gives a more useful signal. It also helps to compare drafts of the same content type instead of treating a score from a novel, legal notice, and blog post as though the same target applies.
When a sentence is highlighted, do not shorten it automatically. First ask whether it contains more than one idea, whether the subject and verb are separated by a long clause, or whether a list would be clearer. Recheck after editing: a small improvement in sentence structure often matters more than moving the score by several points.
Common ways to use it
- Content writers checking whether a blog post or help article is appropriate for a general web audience.
- Teachers and students reviewing an essay for overly long sentences before peer review or submission.
- Documentation teams simplifying instructions, onboarding copy, or technical explanations without changing their meaning.
Frequently asked questions
Is a higher score always better?
No. A high reading-ease score means the text is easier to read, but the right result depends on the subject and audience. A specialized report for experts does not need to read like a children's book.
Why does another checker give a different score?
Tools split sentences and estimate syllables differently, especially for abbreviations, hyphenated terms, and proper nouns. Treat small differences as normal and focus on consistent trends within the same tool.
Does a highlighted sentence mean it is badly written?
No. The highlight is only a prompt to inspect sentences over 25 words. A long sentence can be clear and effective, while a short one can still be vague or confusing.