How to Use the Sentence Complexity Analyzer
The Sentence Complexity Analyzer scores how hard your writing is to read by measuring average sentence length and clause count. Longer sentences packed with commas and conjunctions make it harder for readers to follow your point. This tool splits your text into sentences at periods, question marks, and exclamation points, then counts the words and clause markers (commas and conjunctions like "and", "but", "because") in each one to get an average.
Those averages are combined into a weighted complexity score from 0 to 100, and the score maps to one of four grades: Easy, Moderate, Complex, or Very Complex. Paste in a blog post, report, or email and use the result to guide edits — breaking up long sentences or trimming conjunctions tends to lower the score and improve readability. This matters most for content aimed at a general audience or optimized for search, where overly complex sentences can hurt engagement. Results update live as you type, and nothing you enter is ever sent to a server — everything is calculated right in your browser.
Frequently Asked Questions
The average word count per sentence and the number of clauses (split by commas and conjunctions) are combined into a weighted score from 0 to 100. A higher score means longer sentences with more clauses.
Not necessarily. A score that's too low can feel monotonous. For general audiences, a range of roughly 35-60 tends to read comfortably.
The tool counts commas and common conjunctions like "and", "but", "because", and "so" to estimate the number of clauses per sentence.