Average Sentence Length

Average Sentence Length

Average Sentence Length helps you calculate the average number of words per sentence in your text. Paste or type your text into the tool and it will automatically count the sentences and words, then calculate the average sentence length.

The tool is useful for checking writing style, reviewing sentence structure, and understanding how long your sentences are on average.

How to Calculate Average Sentence Length

Using the calculator is simple:

1. Type or paste your text into the input box.
2. The tool automatically counts the number of sentences.
3. It counts the total number of words in your text.
4. Your average sentence length is calculated in words per sentence.
5. Review the result together with the sentence and word counts.

There is no need to calculate the numbers manually.

How Average Sentence Length Is Calculated

Average sentence length is calculated by dividing the total number of words by the total number of sentences.

For example, if your text contains 100 words across 5 sentences, the average sentence length is 20 words per sentence.

This gives you a quick measurement of the typical sentence length in a piece of text.

Why Check Your Average Sentence Length?

Sentence length can help you understand the structure and rhythm of your writing. A text containing many long sentences may feel different from one made mostly of short sentences.

Checking the average can be useful when editing articles, essays, reports, emails, web content, and other writing. The number should be considered alongside the purpose and style of the text rather than treated as a fixed writing rule.

Check Sentences and Words Together

TextNivo displays the number of sentences, total words, and calculated average length together. This makes it easier to see how the final average was produced.

For additional text analysis, you can use the Sentence Counter to count sentences, the Word Counter to inspect word totals, or the Average Word Length tool to measure the average number of characters per word.

Free Average Sentence Length Calculator

The Average Sentence Length tool is free to use directly in your browser. Enter your text and the result updates automatically, so you can quickly test different versions of your writing without doing the calculation yourself.