Sentence Length Analyzer

Paste your text to see each sentence with its word count. Long and very long sentences are highlighted so you can shorten them for readability. Adjust thresholds and sort as you need.

Smart splitting: abbreviations (Dr., Mr.), decimals (3.14), URLs, and ellipses (...) are preserved.

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Paste or type your content above. Your draft is saved locally and restored when you return.

Long sentence thresholds

Sentences at or above these word counts are flagged as long (amber) or very long (red). Recommended for web: 25 and 40.

Sentence length and readability

Sentence length directly affects how easy your content is to read and how well it ranks. Shorter, varied sentences improve comprehension and keep readers engaged. Use this tool to find long or very long sentences and split them for better flow.

  • Blogs:Ideal average is 15–20 words per sentence. Short sentences improve scannability and featured-snippet potential.
  • SEO:Search engines favor clear, readable content. Vary length but keep most sentences under 25 words.
  • UX:On-screen reading benefits from shorter paragraphs and sentence variety. Break up sentences over 30 words when possible.

Frequently Asked Questions

Why does sentence length matter for readability?

Long sentences are harder to parse and can reduce comprehension. Aim for an average of 15–20 words per sentence for general audiences. Sentences over about 25 words often benefit from being split. This tool highlights long and very long sentences so you can shorten them.

What counts as a long sentence?

By default we flag sentences with 25+ words as long and 40+ as very long. You can change both thresholds in the options. These are guidelines—technical or legal content may use longer sentences, but shortening where possible usually improves clarity.

How does the tool handle abbreviations and numbers?

We use smart splitting so that abbreviations (e.g. Dr., Mr., etc.) and decimals (e.g. 3.14) are not treated as sentence endings. URLs, ellipses (...), and quoted text are also handled so you get accurate sentence counts.

Is my text stored or sent to a server?

No. This tool runs entirely in your browser. Your text and settings are saved locally (localStorage) on your device only. Nothing is sent to any server. You can clear everything with the Clear button.

What is a good sentence length for SEO?

For SEO and blog content, aim for 15–20 words per sentence on average. Vary length for rhythm, but keep most sentences under 25 words. Search engines favor clear, readable content that matches how people read on screens.