Text Tools
Sentence Counter
Count sentences and paragraphs in your text, with bonus stats for average sentence length and paragraph density. Sentences split on `.`, `!` and `?`; paragraphs split on blank lines — both update live as you type.
Your input is processed locally in your browser. It is not uploaded to Dueneo.
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How to use
- 1
Paste your text
Drop an essay, blog post or article into the box. Separate paragraphs with one or more blank lines.
- 2
Watch the counts
Sentences (split on `.`, `!`, `?`), paragraphs (split on blank lines) and words update instantly. Average sentence length helps you spot run-ons.
- 3
Copy the breakdown
Click Copy stats to put a plain-text summary of every count onto your clipboard.
Common use cases
- Check that a paragraph has 3–5 sentences for web readability.
- Keep average sentence length under 20 words for plain-language guidelines.
- Verify that an essay has the required number of paragraphs.
- Audit a sales page for paragraph density and pacing.
Limitations
- Sentences are detected with `.`, `!` and `?`; abbreviations like \"Dr.\" or numbers like \"3.14\" inflate the count.
- Average sentence length is words ÷ sentences; very short inputs may give a misleading average.
- Inputs larger than 1 MB are flagged but still processed on the main thread.