Readability Score Checker
Measure reading level and clarity instantly with Flesch-Kincaid and Coleman-Liau formulas.
Paste writing below to see a real-time readability score, grade estimate, and clarity summary. The value is immediate, practical, and designed to help you revise faster.
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Words
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Sentences
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Syllables
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Reading Ease
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Flesch-Kincaid
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Coleman-Liau
Reading level summary
Add more text to calculate a score
Recent history
Saved readability checks will appear here.
Why a readability score matters
A readability score is useful because clear writing usually performs better than complicated writing. Whether you are drafting a blog post, product description, school assignment, report, or email campaign, it helps to know how demanding your text feels to a reader. This tool gives you that feedback immediately with the Flesch-Kincaid Grade Level, Flesch Reading Ease, and Coleman-Liau Index, so you can judge whether your content matches your audience.
These formulas are not magic, but they are practical benchmarks. They look at sentence length, word length, and estimated syllables to identify text that may be too dense. If a paragraph scores as difficult, that often means readers will need more effort to understand it. For marketing pages, support articles, and general web content, reducing that friction can improve comprehension, trust, and engagement without changing your message.
Helpful ways to use this tool
Try pasting in one section at a time instead of a whole document. That makes it easier to find the parts that need work. If the score seems harder than expected, look for long sentences, repeated filler phrases, or jargon that can be replaced with ordinary language. Shorter sentences, concrete examples, and simpler vocabulary often produce the biggest improvements. You do not need to oversimplify everything; the goal is to fit the reader, not to flatten the subject.
This page runs entirely in your browser, which means your text is not uploaded anywhere. That is useful when you are reviewing private drafts, internal documents, or unpublished material. Use the history section to keep the last ten checks nearby while comparing revisions. A good workflow is to write naturally first, then review the score as an editing step. That approach keeps your voice intact while still improving clarity, accessibility, and overall usefulness for real readers.