Sentence Counter
Count sentences in any text instantly — plus words and averages.
How to use Sentence Counter
- Paste or type your text into the box — anything from one paragraph to a full essay.
- Read the live counts: sentences are tallied instantly as you write or edit.
- Watch the average — if words-per-sentence creeps past ~25, look for sentences to split.
- Edit in place and watch the numbers update until the text meets your target.
What is Sentence Counter?
A sentence counter tallies how many sentences a piece of text contains by detecting terminal punctuation — periods, question marks and exclamation points. Alongside the raw count, the interesting number is usually words per sentence: professional writing averages 15–20; past 25, readers start losing the thread.
Sentence count matters wherever length is judged in sentences rather than words: exam answers ("in 3–5 sentences"), abstracts and summaries with sentence caps, meta descriptions, and readability targets — every major readability formula, from Flesch to SMOG, is built on sentence length.
About the Sentence Counter
Paste or type your text and the sentence count updates live, with no button to press. It is the quick way to check an assignment's "answer in five sentences" constraint, to verify a summary stayed within its cap, or to diagnose why a paragraph feels exhausting — usually a 40-word sentence hiding in the middle.
Writers and editors use sentence counts to control rhythm: strings of same-length sentences read monotonously, and a passage averaging over 25 words per sentence almost always benefits from splitting. Teachers use it for grading constraints; SEO writers keep intro sentences tight for featured snippets.
Counting happens in your browser as you type — your text is never uploaded or stored.