Sentence Length Analyzer

Summary

The Sentence Length Analyzer breaks your text into individual sentences and computes statistics including average word count per sentence, shortest and longest sentences, and an estimated readability grade level. Clear, concise writing typically averages 15 to 20 words per sentence, while academic writing often runs 25 or more words. Use this tool to identify overly complex sentences that may reduce reader comprehension and to balance sentence variety for better flow.

How it works

1. Paste or type your text into the input field.
2. The tool splits the text into sentences using punctuation boundaries.
3. Each sentence is measured for its word count.
4. Summary statistics — average, shortest, longest, and sentence count — are calculated instantly.
5. A readability grade estimate is derived from average sentence length.
6. Sentences are listed below the stats so you can review each one individually.

Use cases

• Check whether blog posts or articles are written at an appropriate reading level.
• Identify run-on sentences that dilute clarity in academic papers.
• Simplify technical documentation by spotting overly long sentences.
• Improve marketing copy by ensuring concise, punchy sentences.
• Prepare speeches or scripts where sentence rhythm matters.
• Assist ESL learners in understanding sentence structure complexity.
• Support editors reviewing readability before publication.
• Optimize email and newsletter copy for easy scanning.

Frequently Asked Questions