What is an em dash (—) and why remove it?
An em dash (—) is the longest dash in typography, wider than a hyphen (-) and an en dash (–). Writers use it to add a dramatic pause, insert an aside, or join related ideas. Used sparingly, it is excellent punctuation. The problem is that AI writing tools overuse it dramatically — studies of AI-generated text find em dashes appearing several times more often than in typical human writing. That makes the em dash one of the clearest signs that a piece was drafted by ChatGPT, Claude or Gemini.
Why does AI text contain so many em dashes?
Large language models learn punctuation patterns from huge amounts of web and book text, and they gravitate to the em dash because it is a flexible, always-grammatical connector. Combined with markdown formatting leaking into prose, the result is text peppered with dashes. Removing them — and the other tells like curly quotes and invisible characters — instantly makes writing read more naturally and personally.
How to remove em dashes from text
- Paste your text into the cleaner box above (or click an example).
- Choose how em dashes should be replaced — Smart mode picks the grammatically correct fix automatically.
- Review the cleaned result, or switch to Diff view to see exactly what changed.
- Click Copy and paste the clean text wherever you need it.
It works the same whether your text came from ChatGPT, an email draft, a LinkedIn post, or a school essay. Because everything runs in your browser, you can clean confidential text safely — nothing is uploaded.
Removing em dashes in Word or Google Docs
Microsoft Word and Google Docs both have Find & Replace, but searching for "—" and replacing it with a comma is a blind swap that often breaks your sentences. For correct results, paste your text here first, let Smart mode fix the grammar, then copy it back into your document.
What else this tool cleans
Em dashes are only one AI tell. This cleaner also removes en dashes, converts curly "smart" quotes and apostrophes to straight ones, expands the ellipsis character (…) to three dots, strips non-breaking spaces and invisible zero-width "watermark" characters, and can remove leftover markdown. It also scores your text for clichéd phrases and overused AI vocabulary so you can see — and fix — what makes writing sound robotic.