Count sentences in your text instantly.
Paste or type text into the box above. The sentence count updates instantly alongside word count, paragraph count, and reading time.
The counter detects sentence boundaries using terminal punctuation: periods (.), exclamation marks (!), and question marks (?). This method catches the vast majority of standard English sentences accurately.
Note: abbreviations (e.g. "Dr.", "U.S.A.") may occasionally add to the count since they contain periods. For most prose this effect is negligible.
Shorter sentences are easier to read. The Hemingway writing guideline suggests keeping most sentences under 20 words. Long sentences are harder to follow and more likely to lose the reader.
Divide your word count by your sentence count to get average sentence length. Aim for variety: a mix of short punchy sentences and longer explanatory ones keeps writing engaging.
Academic paragraphs typically contain 5–8 sentences. Knowing your sentence count helps ensure each paragraph is well-developed but not bloated.
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About 5 to 7 sentences. Typical English prose averages 15 to 20 words per sentence, so 100 words usually breaks into 5 to 7 sentences. Punchy marketing copy might fit 8 to 10 short sentences into the same 100 words, while dense academic writing might use only 4.
For general audiences, aim for an average of 15 to 20 words per sentence, mixing short and long sentences for rhythm. Readability research suggests comprehension drops noticeably once sentences pass 25 words. Divide the word count by the sentence count shown above to check your own average in seconds.
The counter looks for terminal punctuation — periods, exclamation marks, and question marks — each followed by a space or the end of the text. Abbreviations such as Dr. or U.S. can occasionally add an extra sentence to the count, but for normal prose the effect is negligible.