About this tool
Sentence Counter
Free Sentence Counter to estimate detected sentences and average words per sentence in articles, essays and other text.
About the Sentence Counter
Sentence Counter estimates how many sentences appear in a passage and calculates average words per detected sentence. It is useful for writing analysis, readability review and editorial checks.
How to use this tool
Paste your text and run the analysis. Tervilo detects common sentence-ending punctuation such as periods, question marks and exclamation marks, then estimates sentence count and average words per sentence.
- Open the Sentence Counter page on Tervilo.
- Enter or paste the text you want to work with.
- Choose any options relevant to the task.
- Run the tool and review the result before copying or publishing it.
How the calculation or transformation works
Average words per sentence = word count ÷ detected sentence count. Abbreviations, decimal numbers, headings and unusual punctuation can make automated sentence detection imperfect, so use the result as an editorial estimate.
Common uses
- Readability review
- Essay editing
- Article structure checks
- Writing practice
- Content analysis
Privacy and browser-side processing
Tervilo's text tools are designed to process the text in your browser. For ordinary text-editing tasks this can reduce the need to send your content to an application server. Even with browser-side tools, review your organization's security requirements before pasting confidential, regulated or sensitive information into any website.
Related text tools
Explore the Text Tools category for related utilities such as the Word Counter, Character Counter, Case Converter and JSON Formatter.
Frequently asked questions
The FAQ section below covers common questions about this tool, its counting method and practical limitations.
Questions & Answers
Frequently Asked Questions
How does Sentence Counter detect sentences?
It uses common sentence-ending punctuation such as periods, question marks and exclamation marks. Abbreviations and unusual punctuation can affect the estimate.
Can sentence count be used for readability?
Yes, as an editorial estimate. Average words per sentence can help identify dense passages, but readability depends on more than sentence length.