Sentence Counter
Paste or type your text — sentence count updates live along with words, characters, paragraphs and reading time.
Top words
Sentence Counter — Count Sentences in Any Text Instantly
This sentence counter shows your sentence count live as you type or paste. It's built for writers, editors and students who want to track sentence length and pacing — not just total word count.
Need the full picture? The word counter and paragraph counter track the rest of your text's structure on their own dedicated pages, or all at once on the all-in-one counter.
Why sentence count matters
- Readability — shorter average sentence length generally makes text easier to read. Most readability formulas (Flesch, Gunning Fog) weigh sentence length heavily.
- Academic writing — professors often flag run-on sentences. Tracking sentence count against word count gives you a rough average sentence length.
- Editing — a sudden drop in sentence count for the same word count usually means your sentences got longer and denser — worth a re-read.
- Public speaking & scripts — shorter sentences are easier to deliver aloud without losing your place.
How this sentence counter works
Sentences are counted by splitting text on sentence-ending punctuation — periods, question marks, and exclamation points. Abbreviations (like "Mr." or "e.g.") can occasionally be miscounted as sentence breaks, which is a limitation shared by nearly all automated sentence counters, including those built into word processors.
All counting runs entirely in your browser. Your text is never sent to any server. See also: word counter · FAQ.
Frequently Asked Questions
A sentence is counted each time the text hits a period, question mark, or exclamation point followed by a space or the end of the text. This mirrors how most word processors count sentences.
It can. Abbreviations like “Mr.”, “e.g.”, or “etc.” contain a period, so an automated counter may occasionally split a sentence early. This is a known limitation of rule-based sentence counters, not just this one.
Most readability guides recommend an average of 15–20 words per sentence for general audiences. Academic and technical writing often runs longer; marketing and web copy is usually shorter, around 10–15 words.
At an average of 15–20 words per sentence, a 500-word essay typically runs 25–35 sentences. Paste your draft above to get an exact count instantly.