How do I count sentences?

Paste your text and the sentence count appears instantly in the stats panel.

Is my text processed on a server?

No. Runs entirely in your browser.

Sentence count helps writers gauge pacing, teachers assess assignment length, and editors check readability. Average sentence length is a key input for readability formulas like Flesch-Kincaid.

What is a good average sentence length?

For general web content, aim for 15–20 words per sentence. Shorter is better for mobile readers and non-native speakers. Sentences above 30 words significantly reduce readability scores.

Does it count questions and exclamations as separate sentences?

Yes. Any text terminated by a period, exclamation mark, or question mark is counted as a separate sentence.

Text Analysis

Sentence Counter — Count the Number of Sentences in Text Instantly

Count sentences, paragraphs, words, and characters in your text.

Input Text

0 words0 chars

Enter text above to see analysis results

What Is Sentence & Paragraph Counter?

Count sentences, paragraphs, words, and characters in your text.

Sentence count is a key metric for both writing quality and readability analysis. Long documents with very few sentences signal run-on writing and produce low readability scores. Short texts with many sentences can feel choppy and fragmented. The sweet spot for web content is 15–20 words per sentence — short enough to be easily parsed, long enough to convey complete thoughts.

The Sentence Counter gives you the raw count and average sentence length, which is one of the two primary inputs into Flesch-Kincaid readability scoring. Editors use sentence count to identify outlier sentences that are far longer than the average and should be broken up.

Example

Two sentences here. And one more!→2 sentences, 7 words

When to Use the Sentence & Paragraph Counter

→Calculating average sentence length — divide word count by sentence count; aim for 15–20 words per sentence for web content
→Meeting academic writing requirements — some instructors require minimum sentence counts or specify average sentence length guidelines
→Checking content before readability scoring — sentence length is a direct input into Flesch-Kincaid; shorter sentences always improve the score
→Identifying run-on sentences — high word count but low sentence count reveals run-ons that should be split for better readability
→Analyzing competitor content structure — counting sentences per paragraph reveals how top-performing content is structured