Sentence Length Checker
Analyze your writing for long, complex sentences. Improve clarity and readability with our free online checker.
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Your files and text are processed locally in your browser and are not uploaded.
About Readability Checker
The Flesch-Kincaid readability tests are designed to indicate how difficult a reading passage in English is to understand. The tests use syllable counts and sentence lengths to compute a score, where a higher Reading Ease score means the text is easier to read.
Definition: Readability Score
A mathematical estimate of the reading difficulty of a text, usually calculated by dividing the total number of syllables by words, and words by sentences.
Inputs and Outputs
Required Inputs
- ContentPaste your article or copy for analysis.
Expected Outputs
- Flesch ScoreA score from 0-100 indicating reading ease.
- Grade LevelThe U.S. school grade level required to understand the text.
Who Uses the Readability Checker?
Content Marketing
Ensure blog posts and landing pages are accessible to a general audience (aiming for a score of 60+).
Educational Materials
Check if study materials match the appropriate grade level of the students.
How to Use the Readability Checker
- 1Paste your text into the analyzer box.
- 2The tool will instantly count syllables, words, and sentences.
- 3Review your Reading Ease score and adjust complex sentences to improve it.
Quick Facts
Privacy & Security Guarantee
Your text is analyzed entirely in your browser. No content is uploaded to our servers.
Frequently Asked Questions
What is a good Flesch Reading Ease score?
For general web content, aim for a score between 60 and 70, which is easily understood by 13- to 15-year-old students.
How is the syllable count calculated?
The tool uses an advanced regex-based heuristic algorithm to estimate syllables in English words locally.