The Readability Score Checker measures how easy your writing is to read. Paste your text and it calculates the Flesch Reading Ease score and the Flesch–Kincaid grade level, along with word, sentence, and syllable counts and the averages behind the scores.
These are the standard readability formulas used in publishing, education, and content marketing to keep writing clear. Everything is computed in your browser.
How to check readability
- Paste your text into the box.
- Read the Flesch Reading Ease score and its label.
- Check the grade level and the supporting stats.
- Edit your text and watch the scores update to make it clearer.
Flesch Reading Ease
Reading Ease runs from 0 to 100, and higher is easier: 90–100 is very easy (roughly 5th grade), 60–70 is plain English understood by most people, and below 30 is very difficult, typical of academic or technical writing. The score is based on average sentence length and average syllables per word, so shorter sentences and simpler words raise it. Aiming for 60 or above is a good target for general web content.
Grade level and the counts
The Flesch–Kincaid grade level translates the same inputs into a U.S. school grade — a grade level of 8 means an eighth-grader should understand the text. The tool also shows the raw counts (words, sentences, syllables) and the two averages that drive the formulas: words per sentence and syllables per word. Syllables are estimated with a standard heuristic, so counts for unusual words are approximate but the overall scores are reliable.
Frequently Asked Questions
What is a good readability score?
For general audiences, aim for a Flesch Reading Ease of 60 or higher (plain English). Technical or academic writing is often lower; children’s content is higher.
What does the grade level mean?
The Flesch–Kincaid grade level estimates the U.S. school grade needed to understand the text — a level of 8 corresponds to an eighth-grade reading ability.
How can I improve my readability?
Use shorter sentences and simpler, fewer-syllable words. The score updates as you edit, so you can see the effect immediately.
Are the syllable counts exact?
They use a standard heuristic, so a few unusual words may be off by a syllable, but the overall scores are accurate and consistent.