Readability Checker
Flesch score, grade level and your longest sentences
Paste a text to measure its readability.
Longest sentences (over 25 words)
Split long sentences into two or remove side clauses to raise the score.
How Readable Is Your Text?
Readability scores for English, Turkish, German, Spanish and French
Readability formulas estimate how easy a text is to understand from two signals: average sentence length and average word length in syllables. Paste your article, email, product page or essay and this checker calculates the Flesch Reading Ease score (0–100, higher is easier) and the Flesch-Kincaid grade level for English, together with words per sentence, syllables per word and a list of your longest sentences so you know exactly what to shorten. Switch the language to use the formula designed for it: Ateşman for Turkish, Amstad for German, Szigriszt-Pazos (INFLESZ scale) for Spanish and Kandel-Moles for French. For web content, a score of 60–70 in English is a good target.
Features
Flesch score
Plus Flesch-Kincaid grade level
5 languages
A dedicated formula for each
Long sentences
Find exactly what to shorten
Private
Analysed in your browser
Flesch Reading Ease Scale
Score → level
- 90–100: very easy (age 11)
- 80–89: easy · 70–79: fairly easy
- 60–69: standard / plain English (ages 13–15)
- 50–59: fairly difficult · 30–49: difficult (college)
- 0–29: very difficult (graduate)
Formulas used
- English: 206.835 − 1.015 × (words/sentences) − 84.6 × (syllables/words)
- Grade level: 0.39 × (words/sentences) + 11.8 × (syllables/words) − 15.59
- Turkish (Ateşman): 198.825 − 40.175 × syllables/word − 2.610 × words/sentence
- German (Amstad): 180 − words/sentence − 58.5 × syllables/word
Frequently Asked Questions
What is a good readability score?
For general web content aim for a Flesch Reading Ease of 60–70 (grade 8–9). Marketing and consumer texts often target 70+, while academic writing typically scores below 50.
How is the Flesch Reading Ease score calculated?
Score = 206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words). Long sentences and long words both lower the score.
What is the Flesch-Kincaid grade level?
It converts the same two measurements into a US school grade: a score of 8 means an average 8th-grader (age 13–14) can understand the text.
How can I make my text easier to read?
Keep sentences under about 20 words, split long ones, prefer short everyday words, use active voice and break text into short paragraphs with headings.
Why do I get different scores in other tools?
Tools count syllables and sentences slightly differently, especially with abbreviations, numbers and lists. Use one tool consistently to compare versions of a text.
Is my text uploaded?
No. The text is analysed in your browser and saved only locally so you can continue later.