Sentence Counter
Count sentences, paragraphs and get average sentence length instantly.
Frequently Asked Questions
How are sentences counted?
Sentences are counted by detecting punctuation marks such as periods, exclamation marks and question marks.
What is a good average sentence length?
For clear, readable writing, aim for an average of 15 to 20 words per sentence. Shorter sentences are easier to read.
How are paragraphs counted?
Paragraphs are counted by detecting line breaks in your text. Each block of text separated by a blank line counts as one paragraph.
Can I use this for essays and articles?
Yes, this tool is perfect for checking the structure and readability of essays, articles, and blog posts.
Is this tool free?
Completely free with no account or login required.
What is a Sentence Counter?
A sentence counter is a tool that analyses your text and counts the total number of sentences, words, and paragraphs, while also calculating the average number of words per sentence — a key readability metric.
How to Use the Sentence Counter
Paste or type your text into the box above. The tool instantly counts your sentences by detecting periods, exclamation marks, and question marks, and calculates average sentence length in real time.
Why Sentence Length Matters
Short sentences (under 15 words) are easier to read and better for web content. Long sentences (over 25 words) can confuse readers and hurt comprehension. A mix of short and medium sentences creates the most engaging writing rhythm.
Ideal Sentence Length by Content Type
Web articles: 15-20 words average. Academic writing: 20-25 words average. Children's content: 8-12 words average. Marketing copy: 10-15 words average. Legal documents: 25-30 words average.
Who Uses a Sentence Counter?
Writers checking readability. Teachers grading student essays. Content marketers optimising for SEO. Editors reviewing manuscripts. Bloggers improving post structure.