Sentence Counter

Count sentences online with smart and strict modes plus helpful readability stats.

Sentence Counter

Count sentences with smart and strict modes, plus key readability stats.

Paste your text, then generate a report.
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Smart reduces false splits from common abbreviations. Strict counts end punctuation.
Useful for scripts, captions, and list-style writing.
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About Sentence Counter

Sentence Counter – Count Sentences Online

Sentence Counter helps you count sentences quickly and consistently from any text. Paste an article, essay, email draft, or transcript, select a counting mode, and generate a clear report you can copy or download.

How Sentence Counter Works

The tool scans your text and detects sentence boundaries using punctuation, with optional support for treating line breaks as boundaries. Smart mode applies lightweight heuristics to reduce false splits from common abbreviations and numeric patterns, while Strict mode uses a more literal punctuation-driven approach.

Step-by-Step

  • 1) Paste your text: Add paragraphs, captions, bullet-like lines, or long-form writing into the input box.
  • 2) Choose counting mode: Pick Smart for typical prose, or Strict for a simple punctuation-based count.
  • 3) Decide on line breaks: Enable line-break boundaries when each new line should behave like a sentence ending.
  • 4) Click Generate: The tool calculates sentence count and supporting stats such as words, characters, and average words per sentence.
  • 5) Copy or download: Save the report to your clipboard or export it as a TXT file for sharing and archiving.

Key Features

Two practical counting modes

Smart mode aims to match how editors and readers perceive sentence boundaries by avoiding many obvious pitfalls like “Mr.” or “Dr.” causing a split. Strict mode is intentionally predictable: it focuses on end punctuation, making it useful for quick comparisons or workflows where punctuation is already standardized.

Optional line-break boundaries

Not all writing is paragraph-based. Scripts, subtitles, short prompts, and list-style content often treat a new line as a complete unit. With the line-break option enabled, your sentence count can reflect that structure without requiring punctuation at the end of each line.

Readability-friendly statistics

Counts alone can be misleading, so the report includes word count, character count (with and without spaces), and average words per sentence. These metrics help you spot overly long sentences, choppy fragments, or sections that need a smoother rhythm.

Copy-ready report format

The output is presented as plain text that you can paste into a document, issue tracker, or editorial note. This makes the results easy to share with teammates, clients, or students without formatting problems.

Fast workflow for drafts and revisions

When you are iterating on content, you often want to compare versions quickly. Run the tool on multiple drafts to see whether edits reduced sentence length, changed the number of sentences per section, or improved overall clarity.

Use Cases

  • Editing and proofreading: Identify potential run-on sentences by reviewing the average words per sentence and total count.
  • Academic writing: Check whether a paper’s introduction or abstract is too dense and needs sentence breaks.
  • SEO and content marketing: Balance sentence length for better scanability and improved reader engagement.
  • UX and product copy: Keep microcopy concise by monitoring sentence totals in onboarding steps and tooltips.
  • Video and podcast scripts: Treat each line as a beat, count line breaks as sentences, and pace delivery.
  • Customer support macros: Compare reply templates and choose the version that communicates clearly with fewer sentences.
  • Translation and localization: Ensure translated text does not become significantly longer or more fragmented than the source.

Sentence counts are a quick proxy for structure. Combine them with average sentence length to decide where to split, merge, or simplify based on your audience and medium.

Optimization Tips

Prefer Smart mode for normal prose

If your text contains abbreviations, initials, or references (for example, titles and citations), Smart mode will usually produce a count that matches a human reading more closely.

Enable line breaks for scripts and captions

For subtitles, dialogue, poetry drafts, or short social captions, line breaks often represent full units. Treating line breaks as boundaries can produce a more meaningful “sentence” count for these formats.

Use averages as signals, not rules

Average words per sentence is a strong indicator of complexity, but it is not a strict target. Use it as a prompt to review sections that feel difficult to read, and confirm improvements by rerunning the report after edits.

FAQ

Sentences are detected using common end punctuation such as periods, question marks, and exclamation points. Smart mode also reduces false splits from typical abbreviations and number formats.

Use Smart mode for most writing and editing tasks. Use Strict mode for a simple punctuation-only baseline or when your input is already standardized and carefully punctuated.

Yes. Enable the line-break option when each new line should act as a boundary. This is useful for scripts, captions, short prompts, and list-style writing.

It handles many common cases, but writing styles vary. If you work with technical text, compare Smart and Strict outputs and choose the interpretation that best fits your project.

Copy it into editorial notes, QA tickets, lesson feedback, or a shared document. You can also download it as a TXT file to attach to a project or keep as a revision snapshot.

Why Choose Sentence Counter?

Sentence Counter is designed to fit into real writing workflows: it is fast, predictable, and produces a clean plain-text summary. Smart mode helps avoid obvious counting traps, while Strict mode provides a transparent baseline for comparisons.

Use it to improve clarity, tighten pacing, and keep text consistent across drafts. Paste your content, generate a report, and apply the insights directly in your editor.