Sentence Splitter

Break long passages into one sentence per line using end punctuation (. ? ! …).

Paste a wall of text and this tool detects sentence-ending punctuation — periods, question marks, exclamation points, and ellipses — to split it so each sentence sits on its own line. It's handy for translation work, proofreading, improving readability, and any kind of sentence-level analysis.

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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.

How to use

  1. Paste the long text you want to break into sentences.
  2. Choose an output format: line breaks, a numbered list, or a bulleted list.
  3. Set the exception options so abbreviations and decimal points don't trigger false splits, then copy the result.

FAQ

Will it break a sentence at abbreviations like Mr. or Dr.?
No. A built-in filter recognizes common abbreviations (Mr., Dr., e.g., i.e., etc.) and decimal numbers like 3.14, so those periods are never mistaken for the end of a sentence.
Can I add my own abbreviations?
Yes. Use the custom exception field below the input box and enter your terms — including the period — separated by commas. Those periods will be excluded from sentence splitting.
What happens to a period that falls inside quotation marks or parentheses?
The tool also looks at the punctuation immediately following a closing quote or parenthesis, so a sentence isn't awkwardly cut off mid-quote — the whole quoted passage stays together as one sentence.

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