How to Check Readability Scores for Better Writing

Readability scores tell you what education level someone needs to comfortably understand your writing. The Flesch-Kincaid test — used by the US military, government agencies, and publishers — assigns a grade level and reading ease score. Writing at a lower grade level is not "dumbing down"; it is making your content accessible to more people.

How readability formulas work

The Flesch-Kincaid Grade Level formula uses two factors: average sentence length (longer sentences = higher grade level) and average syllables per word (more syllables = higher grade level). The ToolStand Readability Score Checker calculates the grade level, reading ease score (0-100, where higher is easier), total word count, sentence count, average sentence length, and average syllables per word.

Target grade levels by audience

Grade 6-8: General public, consumer-facing content, government communications. Grade 8-10: Blog posts, news articles, marketing content. Grade 10-12: Business writing, technical summaries. Grade 12+: Academic papers, legal documents, technical specifications. Most popular content on the web targets grades 7-9 — accessible to the widest audience without feeling simplistic.

Improving your score

If your score is too high: shorten sentences (aim for 15-20 words per sentence), use simpler words (replace "utilize" with "use"), break long paragraphs (3-5 sentences each), and use active voice. The readability checker shows you the metrics; pair it with the Word Counter to track sentence count and the Diff Checker to compare your original with the simplified version.

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