Textoolz

Sentence Counter

Count sentences, paragraphs, and calculate average sentence length to assess readability. Free online sentence counter with words-per-sentence stats.

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The Sentence Counter analyzes the structure of your text by counting sentences, paragraphs, and total words. It also calculates the average number of words per sentence and per paragraph, helping you assess readability.

Good writing typically uses sentences of varying length, with an average between 15 and 20 words per sentence. If your average is much higher, your text may be harder to read. This tool helps you identify when sentences need to be broken up for clarity.

All analysis is performed in your browser with no server communication, keeping your writing private.

How to Use Sentence Counter

  1. 1Paste or type your text into the input area.
  2. 2View the sentence, paragraph, and word counts instantly.
  3. 3Check the average words per sentence for readability.
  4. 4Copy the results using the Copy button.

Frequently Asked Questions

How are sentences detected?▾
Sentences are detected by splitting on sentence-ending punctuation marks: periods (.), exclamation marks (!), and question marks (?). Abbreviations with periods may cause slight overcounting.
How are paragraphs counted?▾
Paragraphs are separated by one or more blank lines (double newlines). A single block of text with no blank lines counts as one paragraph.
What is a good average sentence length?▾
Most readability guidelines suggest 15-20 words per sentence for general audiences. Technical writing may use longer sentences, while marketing copy often uses shorter ones.
Can the sentence counter handle dialogue or quoted text?▾
The tool detects sentence endings based on punctuation marks (., !, ?). Dialogue that ends with these marks inside quotation marks will be counted as separate sentences, which is generally the correct behavior for most use cases.