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Sentence Counter

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Count sentences, words, and characters with average sentence length analysis.

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A paragraph built almost entirely from long, winding sentences reads as dense and demanding in a way a character-composition breakdown or a paragraph-level word count wouldn't actually capture, since average sentence length is its own distinct signal about how writing actually feels to read at the sentence level specifically. This tool counts sentences, words, and characters with average sentence length analysis, measuring that specific stylistic signal rather than character-type composition or paragraph-level pacing.

See more about the Sentence Counter

Useful for checking whether a draft has drifted toward long, run-on sentences that make it feel denser than intended, confirming a piece of writing stays under an editorial guideline's target average sentence length, or comparing how sentence length varies across two different drafts of the same piece.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Quick answers for Sentence Counter

What counts as a "sentence" for the sentence total?
Your text is split on periods, question marks, and exclamation points, and any resulting chunk that still has non-whitespace content after trimming counts as one sentence.
Does it update as I type, or do I need to click a button?
It recalculates live on every keystroke, sentences, words, characters, paragraphs, and unique words all update together with no separate count button.
What does the unique word count measure?
It's a distinct count of the words in your text, so if you use the same word five times it only adds one to that total, separate from the plain word count above it.