Count sentences in any text.
Paste essays, articles, or copy. See sentence, word, and character counts update as you type.
Private — your text stays on your device, never sent to a server. Auto-clears after 5 min idle and when you close the tab.
Keyword Density
Top keywords will appear here as you type.
Sentences
When sentence counts matter
Readability scores depend on average sentence length — keep sentences short and your copy scores higher on Flesch-Kincaid and Hemingway. Many academic assignments cap the number of sentences per paragraph, and SEO writers track sentence count to stay inside the 15-25-word sweet spot search engines reward.
Need different cuts of the same text? Use the Word Counter for total words and reading time, the Paragraph Counter for structural pacing, or the Character Counter for tweet and SMS limits.
Frequently asked questions
- How does the sentence counter decide where a sentence ends?
- A sentence ends at a period, exclamation mark, or question mark followed by whitespace or the end of the text. Abbreviations like 'Dr.' or 'e.g.' may occasionally be counted as sentence breaks — the tool errs on the side of matching how a reader would split the text.
- Why do I need to count sentences?
- Sentence counts matter for readability scoring (Flesch-Kincaid, Hemingway), academic assignments with sentence limits, and SEO copy where shorter sentences improve on-page engagement.
- Is there a limit on how much text I can paste?
- No. All counting happens in your browser, so you can paste a single tweet or a full novel. The tool never uploads your text.
- Does the tool work on mobile?
- Yes. The interface is fully responsive — paste or type on a phone and the sentence count updates as you go.