Sentence Counter
Count sentences and measure how long they are.
Sentences
0
Words
0
Avg. words / sentence
0
Longest sentence
0 words
Shortest sentence
0 words
Long sentences (25+ words)
0
Sentence Counter
Count the sentences in any text and see how long they are. Paste an essay, article, or email and get the number of sentences, average sentence length, and a list of every sentence with its word count.
What you get
- Sentence count with smart detection of abbreviations and decimals.
- Average words per sentence – a key readability signal.
- Longest and shortest sentence to spot outliers.
- Long sentence warning for sentences over 25 words.
- Sentence table you can review or export as CSV.
Why count sentences?
Teachers and students use sentence counts for essay requirements, writers use average sentence length to keep prose readable, and SEO editors check that web copy isn't made of long, hard-to-scan sentences. Readability formulas like Flesch–Kincaid depend on it too – see our Flesch-Kincaid Calculator.
Also useful: Paragraph Counter and Word Counter.
Frequently Asked Questions
How does the tool detect sentences?
A sentence ends with a period, question mark, exclamation mark, or ellipsis followed by a space and a capital letter or number. Common abbreviations such as Dr., Mr., e.g., and etc., as well as decimal numbers like 3.50, are not treated as sentence endings.
What is a good average sentence length?
For web content, 15–20 words per sentence is easy to read. Sentences longer than 25 words are flagged because they are harder to follow; consider splitting them.
Can I see each sentence separately?
Yes. The table below the counters lists every sentence with its word count, and you can download it as a CSV file.