Writing Analyzer
Analyze your writing's readability, sentence variation, and vocabulary richness - the characteristics that make human writing unique. Use it as a free writing analyzer (also searched as a writing analyser) to rate your own writing before you share it.
How This Tool Works
The Writing Analyzer examines several measurable characteristics of your text that research has linked to human writing patterns. Unlike AI detectors, this tool doesn't claim to determine whether text is human or AI-generated - it simply measures the linguistic features that differentiate human prose.
What We Measure
Sentence Variation (Burstiness) - Human writers naturally vary their sentence lengths. Short punches followed by flowing complex sentences. AI tends toward uniformity. We measure the coefficient of variation in your sentence lengths. Learn more about burstiness →
Vocabulary Richness - The ratio of unique words to total words (type-token ratio). Higher diversity suggests more intentional word choice. We also measure hapax legomena - words that appear exactly once.
Readability - Using the Flesch-Kincaid formula, we estimate the reading grade level. Most published writing targets grade 8-12. Extremely uniform readability across paragraphs can signal generated text.
What do the writing analyzer scores mean?
Each score describes a pattern in your text. It is not a verdict on who wrote it. A higher sentence variation score means you mix short and long sentences more, and our glossary entry on burstiness explains the idea. A higher vocabulary richness ratio means fewer repeated words. A low or high score on any one measure is normal for some genres, so compare the scores against your own earlier work. If an AI detector has flagged your writing, see how AI detectors actually work to understand what they measure that this tool does not.
Paragraph Variation - Similar to sentence variation but at the paragraph level. Human writers create rhythm through paragraph length changes - a long analytical section followed by a one-line kicker.
What This Tool Cannot Do
This tool cannot determine if your text was written by AI. No tool can do this with certainty. What it can do is show you the measurable patterns in your writing that make it distinctly yours. If you've been falsely accused by an AI detector, understanding these metrics can help you build your defense.