How to Enable and Use Readability Statistics in Microsoft Word to Score Document Clarity

When drafting corporate communication, legal advisories, technical guides, or academic white papers in Microsoft Word, ensuring text is readable for your target audience is essential. Writing that is overly dense with convoluted clause structures alienates readers, while simplistic phrasing undermines authority. Microsoft Word contains an automated readability analysis engine based on standard psycholinguistic algorithms—specifically the Flesch Reading Ease and Flesch-Kincaid Grade Level indices. Once enabled, Word calculates readability metrics automatically whenever you run a spelling and grammar check.

Understanding Word Readability Scores

Word evaluates your document against two established linguistic standards:

Metric	Scoring Scale	Optimal Benchmark & Meaning
Flesch Reading Ease	0 to 100	Higher scores indicate easier reading. A score between 60 and 70 corresponds to standard consumer English (understandable by 13- to 15-year-olds). Scores below 30 denote complex academic or legal prose.
Flesch-Kincaid Grade Level	Grade 1 to 18+	Scores correspond to US education grade levels. A score of 8.0 indicates an eighth-grade reading level, which is the recommended target for general public documentation.
Passive Sentences	Percentage (%)	Measures the percentage of sentences written in passive voice. Professional editorial style guides generally advise keeping passive constructions below 10% to 15%.

Enabling Readability Statistics in Microsoft Word

Readability statistics are disabled by default in Word installations. To turn them on:

1. Open Microsoft Word.
2. Click the File tab in the upper-left corner and select Options.
3. In the Word Options window, select Proofing from the left-hand navigation pane.
4. Scroll down to the section titled When correcting spelling and grammar in Word.
5. Ensure the Check grammar with spelling checkbox is ticked.
6. Tick the checkbox next to Show readability statistics.
7. Click OK to apply your configuration.

Running the Readability Check on Your Document

Once activated, the readability dialog is triggered at the conclusion of proofing:

1. Open the document you wish to evaluate.
2. Switch to the Review tab on the Word ribbon.
3. Click the Spelling & Grammar button (or press the F7 shortcut key).
4. Review or address any pending spelling, grammatical, or stylistic recommendations in the Editor pane.
5. As soon as Word finishes checking the last sentence, a dedicated Readability Statistics dialogue box pops up automatically on your screen.

Interpreting Word Summary Statistics

The Readability Statistics dialogue is divided into three clean sections:

• Counts: Provides total tallies for words, characters, paragraphs, and sentences.
• Averages: Calculates structural density, including average sentences per paragraph, words per sentence, and characters per word. If your words per sentence exceed 22 to 25 words, consider breaking long compound sentences into shorter statements.
• Readability: Displays Flesch Reading Ease, Flesch-Kincaid Grade Level, and percentage of passive sentences.

Practical Editorial Strategies to Improve Readability

If your document returns an unexpectedly low Reading Ease score or high Grade Level:

• Trim Word Length: Replace multi-syllable jargon with direct synonyms (e.g. use “help” rather than “facilitate”, “use” rather than “utilise”).
• Reduce Sentence Length: Divide sentences containing more than two independent clauses or heavy semicolon chains into distinct standalone thoughts.
• Convert Passive Voice to Active Voice: Rewrite sentences so the subject performs the action (e.g. change “The report was compiled by the audit committee” to “The audit committee compiled the report”).