✓ 5 algorithms✓ Grade-level✓ Free forever

Readability Scorer

Check grade level and readability for essays, blog posts, emails, and marketing copy.

Flesch

Difficult

9.5

Flesch-Kincaid

Grade 10 (High School)

13.8

Gunning Fog

Grade 14+ (College)

13.9

Coleman-Liau

Grade 14+ (College)

10.2

ARI

Grade 10 (High School)

Words

Sentences

Syllables

Complex

11.7

Avg Words/Sent

1.7

Avg Syll/Word

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How to use Readability Scorer

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Step 1

Paste at least five words of text into the box.

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Step 2

Review the Flesch gauge and the grade-level tiles.

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Step 3

Edit sentences or word choice and watch the scores update.

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Step 4

Copy the results when you need to share them.

How Readability Scorer works

Readability Scorer counts sentences, words, characters, and syllables in your text. It feeds those counts into five standard formulas: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, Coleman-Liau, and ARI. The scores estimate how hard the text is to read and the school grade needed to understand it. The circular gauge reflects the Flesch score, while the tiles show the other indexes and grade labels. Because everything runs on-device, your draft never leaves the page.

Why use this Readability Scorer?

📋

Step 1

Compare drafts with consistent grade-level scores.

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Step 2

Spot long sentences and dense vocabulary before publishing.

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Step 3

Match content difficulty to a target audience or class level.

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Step 4

Keep private text on your device with in-browser calculations.

Frequently asked questions

Which readability score should I pay most attention to?

Use the Flesch Reading Ease score for a quick sense of difficulty and the grade-level scores for audience fit. When the scores disagree, focus on the one your audience or editor expects. The main value is comparing drafts consistently.

What is a good readability score?

For general web content, a Flesch score around 60 to 70 is usually easy to read. School materials may target a specific grade level, while technical docs can be higher. Choose the range that matches your readers.

Does this readability scorer work for languages other than English?

The formulas were created for English and depend on English syllable patterns. You can paste other languages, but the grade levels will be approximate and may be misleading. For best accuracy, use English text.

How much text can I analyze at once?

There is no strict limit, but very long documents may slow the browser. For large reports, test one section at a time and compare the results. This keeps the scores responsive and easier to interpret.

Is my text sent to a server?

No. All calculations run in your browser and the text is not uploaded. You can safely check drafts or private documents.