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Sentence Counter

Count sentences in any text instantly — with average sentence length, longest and shortest sentence stats, and live updates as you type.

✓ Free✓ No signup✓ Privacy first✓ Runs in your browser
Sentence Counter – ToolPremier

Count sentences words characters paragraphs and reading time · live statistics · instant results

How it works

Convert in three steps

Paste or type your text

Add any paragraph, article, or document you want to analyse.

Read the sentence stats

Total sentence count, average words per sentence, longest sentence, and shortest sentence all update live.

Use for readability

Identify overly long sentences that should be split, or sections with too many short, choppy sentences.

FAQ

Common questions

Sentences are identified by terminal punctuation — periods (.), question marks (?), and exclamation marks (!). Abbreviations with periods (e.g., “Dr.”, “U.S.A.”) are handled with common abbreviation detection to avoid false splits. Ellipses (…) are treated as a single terminal mark.

Average sentence length is one of the inputs to readability formulas like Flesch-Kincaid. Long average sentence length (above 20 words) correlates with lower readability scores and harder-to-process text. Most readability guides recommend an average of 15–20 words per sentence for general web content. The sentence counter helps you see where you stand and identify which specific sentences are pulling the average up.

The Word Counter shows total word count alongside a sentence count. The Sentence Counter goes deeper — it shows average words per sentence, flags the longest and shortest sentences specifically, and is focused on sentence-level analysis rather than overall volume.

No. All counting runs in your browser. Text is never transmitted to any server.

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About the Sentence Counter

Sentence length is one of the most controllable variables in writing quality — long, complex sentences reduce readability, while very short sentences can make writing feel choppy. The sentence counter gives you the numbers you need to diagnose both problems: total sentence count, average length in words, and the outliers at both ends of the length distribution. It’s a practical editing tool for writers who want to improve clarity, a useful check before running a readability score, and a quick way to understand the structural density of any block of text.

Benefits

Privacy

All counting runs in your browser. Text is never uploaded or transmitted to any server.