Run On Sentence Checker Online Free – Check if sentence is run-on?

What is a Run-On Sentence Checker?

The Run-On Sentence Checker is designed to help you identify and fix run-on sentences quickly and easily. By using this tool regularly, you can improve your writing clarity and ensure your ideas are presented in a way that’s easy for readers to understand.

Run On Sentence Checker

Type or paste your text below for real-time analysis of run-on sentences.

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Analysis Results

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Sentences: 0
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Run-on sentences: 0

What is a Run-On Sentence?

A run-on sentence occurs when two or more independent clauses (complete thoughts) are connected improperly. This typically happens when:

Here’s an example of a run-on sentence:

“The weather was beautiful we decided to go for a walk in the park.”

  • Clauses are joined without any punctuation
  • Clauses are joined with only a comma (comma splice)
  • Too many ideas are crammed into a single sentence

Real-Time Analysis

Get instant feedback as you type with our advanced algorithm that identifies run-on sentences in real-time.

Specific Suggestions

Receive tailored recommendations for fixing each run-on sentence based on its specific structure.

Detailed Statistics

Track your writing improvement with sentence counts and run-on sentence statistics.

🛠️ 5 Ways to Fix Run-On Sentences

Learn the standard techniques to correct run-on sentences in your writing

Separate into individual sentences

Use a period to create two complete sentences.

Use a comma with a coordinating conjunction

Add a comma followed by a coordinating conjunction (and, but, or, nor, for, so, yet) between clauses.

Use a semicolon

Place a semicolon between closely related independent clauses.

Use a subordinating conjunction

Introduce one clause with a subordinating conjunction (because, although, when, if, since, etc.).

Use a conjunctive adverb with proper punctuation

Connect clauses with a semicolon, conjunctive adverb (however, therefore, meanwhile, consequently, etc.), and a comma.

FAQs

Common questions about run-on sentences

What exactly is a run-on sentence?

A run-on sentence occurs when two or more independent clauses (complete thoughts) are joined improperly without correct punctuation or conjunctions. Despite common misconception, run-on sentences aren’t just long sentences—they’re improperly structured sentences regardless of length.

How do run-on sentences affect my writing?

Run-on sentences can make your writing difficult to read and understand. They may cause readers to lose track of your main points, create confusion about relationships between ideas, and give an impression of disorganized thinking. In professional or academic contexts, excessive run-on sentences may lower your credibility.

What’s the difference between a run-on sentence and a comma splice?

A comma splice is actually a type of run-on sentence. It occurs specifically when two independent clauses are joined with only a comma. A run-on sentence is the broader category that includes comma splices as well as sentences where clauses are joined with no punctuation at all.

What are the 5 rules to fix a run-on sentence?

There are five main ways to fix a run-on sentence:

After: “She didn’t study for the test; consequently, she failed it.”

Separate into individual sentences – Use a period to create two complete sentences.

Before: “The meeting ran late we missed our train.”

After: “The meeting ran late. We missed our train.”

Use a comma with a coordinating conjunction – Add a comma followed by a coordinating conjunction (and, but, or, nor, for, so, yet) between clauses.

Before: “The restaurant was crowded we decided to order takeout.”

After: “The restaurant was crowded, so we decided to order takeout.”

Use a semicolon – Place a semicolon between closely related independent clauses.

Before: “The presentation was informative the slides were well-designed.”

After: “The presentation was informative; the slides were well-designed.”

Use a subordinating conjunction – Introduce one clause with a subordinating conjunction (because, although, when, if, since, etc.).

Before: “We left early the traffic was terrible.”

After: “We left early because the traffic was terrible.”

Use a conjunctive adverb with proper punctuation – Connect clauses with a semicolon, conjunctive adverb (however, therefore, meanwhile, consequently, etc.), and a comma.

Before: “She didn’t study for the test she failed it.”

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