What is a good Flesch Reading Ease score?
In this tool: 80 and above is "Very Easy," 60-79 is "Easy," 50-59 is "Standard," 30-49 is "Hard," and below 30 is "Very Hard." Most general-audience web content aims for Easy or better.
Readability Checker Free - Flesch Reading Score
Check readability score, sentence length, and writing complexity for blog posts, landing pages, and emails.
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About this tool
Writing for the web generally reads easier with shorter sentences and simpler words than academic writing. This tool calculates the Flesch Reading Ease score - the standard formula published by Rudolf Flesch in 1948, based on your average words per sentence and an estimated average syllables per word - along with a readability label (Very Easy to Very Hard), a count of sentences over 20 words, and a count of passive-voice-style phrases (a be-verb followed by an "-ed" word, like "was completed").
It shows counts, not which specific sentence or word to fix - there's no highlighting of individual long sentences or flagged words in the text itself. Readability is one input among many for on-page content quality at most; Google's ranking systems don't compute or require this score, so treat it as writing-clarity guidance rather than an SEO metric.
Everything runs in your browser, and the formula is calibrated for English - it will misjudge text written primarily in other scripts (see Limitations).
A readability checker that calculates the Flesch Reading Ease score for pasted text - based on average sentence length and an estimated average syllables per word - along with a readability label, long-sentence count, and a passive-voice hint count, so you can spot where your writing might be harder to read.
How to Use Readability Checker
Paste Text
Add the article, email, or copy you want to evaluate.
Measure Readability
The tool calculates a readability score and average sentence length.
Review Writing Signals
Check long-sentence count and passive-writing hints.
Revise and Recheck
Edit your copy, paste the new version, and test readability again.
Common Workflows
Paste Your Text
Add an article, email, landing page copy, or any draft you want to evaluate.
Read the Flesch Score and Label
Check the Flesch Score (0-100) and its readability label, from Very Easy to Very Hard.
Review the Supporting Counts
Look at average words per sentence, long-sentence count, and passive-voice hint count for more context.
Revise and Recheck
Edit your text, paste the updated version, and check the score again.
Best For
- Calculates the Flesch Reading Ease score (0-100, clamped) plus a readability label, average words per sentence, and counts of long sentences (over 20 words) and passive-voice-style phrases.
- Syllables are estimated with a vowel-group heuristic, not a dictionary lookup - so counts are approximate and can differ from other readability tools.
- Runs entirely in your browser, no login required - though the formula is calibrated for English and produces misleadingly high scores on non-Latin-script text (see Limitations).
Examples
Non-English text scores as artificially "easy"
Input
A moderately complex English sentence (10 words) vs. an Urdu sentence of similar length and complexity (12 words)Result
English: Flesch Score 0.0, "Very Hard". Urdu: Flesch Score 100.0, "Very Easy".The syllable counter only recognizes the letters a-z, so every word in the Urdu sentence contributes zero syllables. That drives the average syllables per word to 0, which pushes the Flesch formula to its maximum score - not a random or neutral result, but a reliably misleading "Very Easy" score for non-Latin-script text, regardless of how genuinely complex that text is.
Use Cases
Spot-checking a blog post before publishing
Paste the draft and check whether the score and long-sentence count suggest simplifying anything.
Comparing two drafts of the same copy
Check the score before and after an edit to see whether sentence length or estimated syllables per word improved.
Getting a rough passive-voice signal
Use the Passive Hints count as a loose indicator, keeping in mind it only catches "-ed"-ending phrasing (see Limitations).
Sharing a readability target with a content team
Use the score bands (Very Easy to Very Hard) as a shared, consistent reference point across drafts.
Common Mistakes
Problem
Expecting the tool to point to specific hard-to-read sentences or words
Solution
It shows counts - total long sentences, total passive hints - not which specific sentence or word is the problem. There's no in-text highlighting.
Problem
Assuming a Grade Level score is included
Solution
Only the Flesch Reading Ease score and label are calculated. There's no Flesch-Kincaid Grade Level or similar grade-level output.
Problem
Trusting the score on non-English text
Solution
The syllable counter only recognizes a-z characters, so text in Urdu, Arabic, or other non-Latin scripts scores as artificially easy rather than being flagged as unsupported - treat scores on non-English text as meaningless.
Problem
Treating passive hints as a complete passive-voice check
Solution
Detection only catches a be-verb followed by an "-ed" word (like "was completed") - it misses irregular past participles like "written," "given," or "taken," and can flag non-passive "-ed" adjectives like "was excited."
Problem
Assuming the score is a ranking factor Google checks
Solution
Readability is, at most, one indirect influence on user engagement - it isn't a metric Google's ranking systems compute or require.
Tips & Best Practices
Use the score to compare drafts, not as an absolute target
Since syllable counting is approximate, treat changes in your own score across edits as more meaningful than the exact number itself.
Check longer samples for a more stable score
Averages calculated from very short text (a sentence or two) can swing widely - longer samples give a steadier read.
Manually review flagged-as-long sentences
The Long Sentences count tells you how many sentences exceed 20 words, but not which ones - scan your text for sentences that feel long to find them.
Don't rely on Passive Hints alone to fix passive voice
Since it only catches "-ed"-ending phrasing, manually check for irregular passive constructions ("was written," "were given") that this count misses.
Limitations
Only Flesch Reading Ease is calculated - no Grade Level
There's no Flesch-Kincaid Grade Level or other grade-level formula implemented, only the Flesch Reading Ease score (0-100) and its readability label.
Calibrated for English; misleadingly high on non-Latin scripts
The syllable counter only recognizes a-z characters. Words in Urdu, Arabic, or other non-Latin scripts contribute zero counted syllables, which pushes the score toward an artificially high "easy" result rather than flagging the text as unsupported.
Syllable counting is an approximation
Syllables are estimated with a heuristic - short words count as one syllable, common suffixes are stripped, then vowel groups are counted - rather than a dictionary lookup, so counts can differ from other readability tools and from true linguistic syllable counts.
Passive-voice detection is a narrow heuristic
It only matches a be-verb followed by a word ending in "-ed" - it misses irregular past participles ("written," "taken") and can false-positive on non-passive "-ed" adjectives ("was excited").
Shows counts, not locations
Long-sentence and passive-hint counts are totals only - the tool doesn't highlight or list which specific sentences or phrases triggered them.
Not a ranking signal
Readability is not a metric Google's ranking systems compute or require - treat the score as writing-clarity guidance, not an SEO score.
Comparisons
This Tool vs. a Full Editing Assistant (e.g., Hemingway Editor)
Both estimate readability, but only one highlights the specific sentences and words involved.
| This Tool (Readability Checker) | A Full Editing Assistant | |
|---|---|---|
| What you see | Score, label, and counts (long sentences, passive hints) | In-text highlighting of the specific sentences and words flagged |
| Formulas | Flesch Reading Ease only | Often multiple formulas, sometimes with a grade-level score |
| Passive-voice detection | A narrow "-ed"-ending heuristic | Broader grammatical detection, including irregular verbs |
Which should you use?
Use this tool for a quick, private Flesch score and a few supporting counts; use a full editing assistant when you want specific sentences and words highlighted for revision.
FAQs
The most common question is what the score actually means and whether it affects search rankings. The Flesch Reading Ease score in this tool runs from 0 to 100 with five labels - Very Easy (80+), Easy (60-79), Standard (50-59), Hard (30-49), and Very Hard (below 30) - and it's a guide for how easy your text is to read, not a ranking signal Google computes or requires. The FAQ below also covers the syllable-counting approximation and why this formula doesn't work for non-English text.
Does this tool calculate a Grade Level score?
No. Only the Flesch Reading Ease score and its readability label are calculated - there's no Flesch-Kincaid Grade Level or similar grade-level formula.
Does it work for languages other than English?
No. The syllable counter only recognizes a-z characters, so non-Latin-script text (Urdu, Arabic, etc.) scores as artificially easy rather than being flagged as unsupported - scores on non-English text aren't meaningful.
Why might this score differ from another readability tool?
Syllable counting is an approximation - a heuristic based on word length, common suffixes, and vowel groups - not a dictionary lookup. Different tools use different approximations, so scores commonly vary between them.
Does a higher readability score improve Google rankings?
Not directly. Readability isn't a metric Google's ranking systems compute or require - treat the score as guidance for your readers, not an SEO score.
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