MicroTools

Readability & Plain Language Analyzer

Get Flesch-Kincaid, Gunning Fog, and plain-language score for any text.

About Readability & Plain Language Analyzer

Analyze text readability with Flesch-Kincaid, Gunning Fog, SMOG, and Coleman-Liau indexes. Get a plain-language score, detect passive voice, long sentences, and complex words. Perfect for WCAG 3.1.5 (Reading Level) compliance.

How to Use

  1. 1Paste your text into the input area.
  2. 2Readability scores update instantly: Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau.
  3. 3See the recommended reading age and US grade level.
  4. 4Long sentences (20+ words) and passive voice instances are highlighted.
  5. 5Use the suggestions panel to simplify specific phrases.

Frequently Asked Questions

What is the Flesch-Kincaid Reading Ease score?
A score from 0–100. Higher scores mean easier to read. 60–70 is considered plain English (understood by 13-15 year-olds). Government and healthcare content should aim for 60+.
What is WCAG 3.1.5 (Reading Level)?
A Level AAA requirement: if a page requires reading ability beyond lower secondary education level, provide a supplementary version or summary in simpler language.
What counts as passive voice?
Sentences where the subject receives the action instead of performing it (e.g. "The form was submitted by the user" vs "The user submitted the form"). Passive voice adds complexity.
What is a complex word?
For Gunning Fog: words with 3 or more syllables (excluding common suffixes like -ing, -ed, -es). High counts of complex words increase the Fog Index.

Tool Info

Category
compliance
Usage
Unlimited

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