Readability Score Checker
Paste any text to get its Flesch Reading Ease and Flesch-Kincaid Grade, plus word, sentence, and syllable counts. Everything runs in your browser, so your text never leaves your machine.
About the Readability Score Checker
The Readability Score Checker measures how hard your text is to read. It computes the Flesch Reading Ease score and the Flesch-Kincaid Grade Level, then shows the word, sentence, and syllable counts behind those numbers along with a plain-English interpretation. It is built for writers, editors, marketers, and WordPress authors who want content that more people can follow. Everything runs in your browser, so your text stays private and is never uploaded.
How it works
- Paste or type your text into the input area, or load one of the sample texts.
- The tool counts words, sentences, and syllables as you type and updates the scores live.
- Read the Flesch Reading Ease score (0 to 100, higher is easier) and the Flesch-Kincaid Grade Level (the U.S. school grade needed to follow the text).
- Use the one-line summary to decide whether to shorten sentences or simplify words.
Features
- Live Flesch Reading Ease score with an easy/standard/hard label.
- Flesch-Kincaid Grade Level mapped to a school grade band.
- Word, character, sentence, and syllable counts.
- Average words per sentence and syllables per word, the two inputs that drive the scores.
- Four sample texts (blog, simple, legal, academic) to compare against your own.
Frequently asked questions
Is my text uploaded anywhere?
No. The counting and scoring happen entirely in your browser. Nothing is sent to a server or logged.
What is a good Flesch Reading Ease score?
A score of 60 to 70 is plain English that most adults read easily, around an 8th to 9th grade level. Scores above 80 are very easy; scores below 50 are hard and suit technical or academic readers.
What does the Flesch-Kincaid Grade Level mean?
It estimates the U.S. school grade needed to understand the text. A grade of 8 means an average 8th grader could read it. For general web content, aiming for grade 7 to 9 reaches the widest audience.
How are syllables counted?
Syllables are estimated with a vowel-group heuristic that handles common English spelling. It is accurate for most words but can miss unusual spellings or names, so treat the scores as close estimates rather than exact values.
Why do my scores change with very short text?
Both formulas rely on averages per sentence and per word, so a single short sentence gives an unstable result. Paste a full paragraph or more for a score that reflects how the text actually reads.