Sentence Counter
Count sentences in text
About This Tool
The Sentence Counter analyzes your text and counts the number of sentences, along with words, characters, and paragraphs. It also calculates average sentence length to help improve readability.
Paste your text to get instant statistics. Perfect for writers, students, and anyone who needs to analyze text structure and length.
How It Works
How to Use This Counter
Counting sentences is easy:
- Paste your text - Enter or paste the text you want to analyze.
- View statistics - See sentence count, word count, and more instantly.
- Check averages - Review average sentence length and other metrics.
- Improve readability - Use insights to optimize your writing.
Formula
How Sentences Are Counted
Sentence Endings: Period (.), Question mark (?), Exclamation mark (!)
Exceptions handled: Abbreviations (Mr., Dr., etc.), Decimal numbers (3.14), URLs and emails, Ellipsis (...)
Readability Metrics:
- Average sentence length = Total words / Sentences
- Optimal: 15-20 words per sentence
Examples
Examples
Example 1: Short Paragraph
- Text: "Hello world. How are you? I'm fine!"
- Sentences: 3
- Words: 8
- Avg length: 2.7 words/sentence
Example 2: Academic Text
- Text: 500-word essay
- Sentences: 25
- Avg length: 20 words/sentence
- Status: Good readability
Example 3: Complex Writing
- Text: Legal document
- Sentences: 10
- Avg length: 45 words/sentence
- Status: Consider simplifying
Frequently Asked Questions
How does the sentence counter work?
Paste your text. The tool counts sentences by detecting sentence-ending punctuation: periods (.), question marks (?), and exclamation points (!). It handles abbreviations (Dr., Mr., U.S.) and decimal numbers (3.14) without false counts. Results show total sentences, average sentence length, and distribution.
What is the ideal sentence length for readability?
15-20 words per sentence for general web content. Under 15 words for easy reading. 20-25 for professional content. Over 25 words reduces comprehension. The tool shows your average sentence length and highlights sentences that exceed recommended limits.
How many sentences should a paragraph have?
3-5 sentences for web content. 5-8 for academic writing. 1-3 for mobile-optimized content. Single-sentence paragraphs add emphasis. The tool counts sentences per paragraph and flags paragraphs that are too long or too short for your content type.
Can I count sentences in different languages?
Yes. The tool supports languages using standard punctuation (English, Spanish, French, German, Portuguese, Italian). For languages with different sentence markers (Chinese, Japanese, Thai), it recognizes language-specific punctuation like 。and ？for accurate counting.
Does the sentence counter handle dialogue and quotes?
Yes. Quoted sentences are counted individually: '"Hello," she said. "How are you?"' counts as 2 sentences. The tool handles nested quotes, dialogue tags, and mixed punctuation. It distinguishes between sentence-ending periods and abbreviation periods.
Disclaimer
Disclaimer: This tool provides automated text analysis for general reference only. Sentence detection uses pattern-based rules and may not be 100% accurate for all text formats, especially those with unusual punctuation or formatting. All processing happens in your browser.
💡 Tips
Tips
- Aim for 15-20 words per sentence for readability
- Vary sentence length for engaging writing
- Long sentences (30+ words) can be hard to follow
- Short sentences add impact and clarity
- Check sentence count for essay requirements