What is a good Flesch Reading Ease score?

Scores between 60 and 70 are considered standard Plain English (suitable for 8th and 9th graders, roughly ages 13 to 15). Scores above 80 are easy for nearly all readers, while scores below 50 reflect academic or technical writing.

How is Flesch-Kincaid Grade Level interpreted?

A Flesch-Kincaid score corresponds directly to US school grade levels. For instance, a score of 8.2 means an average 8th grader can easily understand the text. Most web content aims for grades 6 through 8.

What qualifies as a complex word in readability algorithms?

In the Gunning Fog and SMOG algorithms, words containing three or more syllables (excluding common proper nouns, jargon, and compound suffixes like -ed, -es, or -ing) are categorized as complex words.

Is my text safe and private while checking readability?

Yes. All calculations occur strictly inside your browser using JavaScript. No text is ever uploaded to our servers or stored.

Can I use this readability checker for SEO content and essays?

Absolutely. Search engines prefer clear, digestible content that satisfies user intent without unnecessary jargon. Testing readability ensures your writing matches user expectations.

Readability Score & Grade Level Checker

Calculate Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, and text complexity.

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Your text or article

Flesch Reading Ease

43.6/ 100Difficult (College Level)

Academic or technical documentation. Demands focused concentration.

Estimated Reading Time

~1 min

Readability Formula Scores

Flesch-Kincaid Grade

9.9

US School Grade equivalent

Gunning Fog Index

13.6

Formal education years needed

Coleman-Liau Index

13.6

Letter & sentence ratio

SMOG Index

12.2

Polysyllable accuracy standard

Automated Readability (ARI)

15.2

Real-time comprehension index

Avg Sentence Length

10.8

Words per sentence

Text Composition & Vocabulary

Words: 65
Sentences: 6
Syllables: 117
Complex Words (3+ syl): 15
Characters: 431
Letters: 355
Avg Syllables / Word: 1.8
Complex Word Ratio: 23%

Writing Improvement Observations

•Sentence length is well balanced (averaging 10.8 words per sentence).
•23% of your vocabulary is complex (3+ syllables). Replace multi-syllable terms with simpler synonyms where possible.
•Break longer paragraphs into shorter 2–3 sentence chunks to boost reader retention.

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About Readability Score & Grade Level Checker

Wondering whether your blog post, essay, or marketing copy is too complex for your audience? The Readability Score Checker on TheToolss analyzes your writing across six respected readability formulas: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau, SMOG, and Automated Readability Index (ARI). Get clear grade level benchmarks, syllable breakdowns, sentence complexity metrics, and actionable writing improvement tips. Fast, free, and 100% private in your browser.

How to use Readability Score & Grade Level Checker

Paste or type your article, essay, or copy into the text editor.
View real-time readability scores, grade levels, and complexity metrics.
Review targeted writing tips to simplify long sentences and complex words.

Key features

Computes 6 standard formulas: Flesch, Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and ARI
Clear audience grade classification (e.g. 8th Grade / Plain English)
Detailed counts for syllables, complex words, and average sentence length
Estimated reading time and sentence complexity breakdown
100% client-side privacy — your copy is never uploaded or sent to servers

Frequently asked questions

What is a good Flesch Reading Ease score?: Scores between 60 and 70 are considered standard Plain English (suitable for 8th and 9th graders, roughly ages 13 to 15). Scores above 80 are easy for nearly all readers, while scores below 50 reflect academic or technical writing.
How is Flesch-Kincaid Grade Level interpreted?: A Flesch-Kincaid score corresponds directly to US school grade levels. For instance, a score of 8.2 means an average 8th grader can easily understand the text. Most web content aims for grades 6 through 8.
What qualifies as a complex word in readability algorithms?: In the Gunning Fog and SMOG algorithms, words containing three or more syllables (excluding common proper nouns, jargon, and compound suffixes like -ed, -es, or -ing) are categorized as complex words.
Is my text safe and private while checking readability?: Yes. All calculations occur strictly inside your browser using JavaScript. No text is ever uploaded to our servers or stored.
Can I use this readability checker for SEO content and essays?: Absolutely. Search engines prefer clear, digestible content that satisfies user intent without unnecessary jargon. Testing readability ensures your writing matches user expectations.