Readability Checker
Short answer
Reading-ease score with the formula made for your text's language (English, German, French, Spanish, Italian), plus sentence and word counts.
What It Does
Scores how easy your text is to read with the formula made for its language: Flesch for English, Amstad for German, Kandel–Moles for French, Szigriszt-Pazos for Spanish and Gulpease for Italian, all on a 0–100 scale where higher is easier. English text also gets a Flesch-Kincaid US grade level. Greek has no validated formula, so Greek text gets words per sentence instead. Every result shows the word and sentence counts.
Why It Matters
The reading level of a page should suit its readers. A page written for specialists can be dense; a page for the general public should be easy to follow. Text that is much harder than your audience expects risks losing readers before they finish the first paragraph.
How It Works
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Enter a page URL or paste your text
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We take the visible text and detect its language from the page's lang attribute or from the words themselves
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Count words, sentences and syllables, and apply the formula made for that language
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Return the score and the formula used, plus words per sentence, word count and sentence count
Sample input + output
url: https://rankproof.eu/guides/keyword-research-strategy
Reading ease (Flesch): 51 Grade level: 8 Words per sentence: 9 Words: 596 Sentences: 69
Who Uses This
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Content Editor
Before publishing, check that consumer-facing posts are easy to read and technical documents suit their expert readers.
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Education Publisher
Check that material written for younger or less confident readers scores as easy to read.
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Content Marketer
Check the reading level of your top posts against the audience they were written for.
Frequently Asked Questions
What score should my content aim for?
There is no single target. On these scales 60 or more usually reads as plain language for a general audience; specialist text can score lower and still suit its readers. Match the level to the people you write for.
Why a different formula for each language?
Words in German, French, Spanish and Italian carry more syllables on average than English words, so the English Flesch formula rates them as harder than they read. Each of these formulas was fitted to its own language, which makes the score comparable within that language.
Does Google use readability for ranking?
Not directly, and Google has said it does not use bounce rate as a ranking signal. Matching the reading level to your audience is still worth doing for the readers themselves.
Is shorter always better?
Not always. Short sentences full of long, technical words can still score as hard to read. Aim for plain words and sentences of reasonable length.
Does it work for Greek text?
Greek has no widely validated reading-ease formula, so the tool does not invent a score. It reports words per sentence instead; plain-language guides suggest about 20 or fewer.