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Sentence Counter

Count sentences and analyze sentence length. Find long sentences that may need splitting for clarity.

Your Text

0 words | 0 characters
Sentences
0
Avg. Length
0 words
Longest
0 words

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How to Use This Tool

  1. 1Paste your text in the input box
  2. 2See your sentence count instantly
  3. 3Review average sentence length
  4. 4Check your longest sentence for readability

Pro Tips

Ideal sentence length

Aim for 15-20 words per sentence on average. Mix short and long for rhythm.

Readability rule

If a sentence is over 25 words, consider splitting it into two.

Academic writing

Scholarly writing often has longer sentences, but clarity should never suffer.

Web content

Online readers prefer shorter sentences. Keep most under 20 words.

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Write Clearer Content by Watching Your Sentences

Long sentences lose readers. This is not opinion - it is backed by readability research going back decades. The sentence counter shows you exactly where your writing stands so you can make adjustments before publishing.

The sweet spot for most content is 15-20 words per sentence on average. That does not mean every sentence should be 17 words. Mix short punchy statements with longer explanations. The variety keeps readers engaged while the average keeps content accessible.

Web readers skim. They do not read every word. Shorter sentences create more natural break points where scanning eyes can land. When your average sentence length creeps past 25 words, readers start bouncing.

Academic and technical writing can sustain longer sentences because readers are invested in the material. But even scholarly journals have found that clearer writing gets cited more often. Complexity of ideas does not require complexity of sentence structure.

Use this tool to analyze your draft, find your longest sentences, and decide which ones need splitting. Often the fix is simple: find the word and in the middle of a long sentence and replace it with a period.

Key Features:

  • Real-time sentence counting as you type
  • Average sentence length calculation
  • Identifies your longest sentence for review
  • Shows sentence count alongside words and characters
  • Helps improve Flesch readability scores
  • Works with any English text instantly

Frequently Asked Questions

Sentences are separated by periods (.), question marks (?), and exclamation points (!). Each creates a new sentence.
Long sentences are harder to read and understand. Shorter sentences improve clarity and keep readers engaged.
For general readability, 15-20 words is ideal. Academic writing can be longer, web content should be shorter.
Mix short punchy sentences with longer detailed ones. Vary your sentence structure to maintain reader interest.
Web content: 2-4 sentences per paragraph. Academic writing: 4-6 sentences. The key is one main idea per paragraph, regardless of length.
Shorter sentences increase your Flesch reading ease score. Aim for an average of 15-20 words per sentence to score above 60, which most adults can easily understand.
Even formal or academic writing benefits from sentence variety. Mix lengths to maintain reader attention. Long sentences should be reserved for complex ideas that truly require them.
If a sentence has more than 25-30 words or contains multiple independent clauses, split it. Look for places where you can add a period and start fresh.

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