Training: As you work on a presentation, PowerPoint automatically checks spelling and basic grammar to help you avoid errors and mistakes. Watch this video to see how it works.

As you type, PowerPoint for the web lets you know when it detects possible spelling, grammar, or style mistakes by underlining the words.

Go to Review > Language > Set Proofing Language. Note: Languages in use in the document display at the top. Languages with downloaded proofing tools have a checkmark symbol. If …

You can check spelling in PowerPoint, but you can't check grammar. PowerPoint automatically checks for and marks potential spelling errors with a wavy, red underline.

Choose to look at or ignore certain types of words when using spell checker. Ignore uppercase words, numbers, or web addresses when checking spelling.

Add words like proper names or technical terms to your spell check dictionary or create and edit a new custom dictionary.

Spelling and grammar errors can seriously undermine what you're trying to say but you can turn off spell check while you're writing to help minimize distractions.

This article addresses common problems and helps you make sure your text is identified with the correct language; that the correct language dictionary is being used to check your spelling and …

Depending on which language you are using, proofing tools can check spelling or grammar, hyphenate text, and look up words in the thesaurus. You can switch between proofing tools by …

Oct 14, 2025 · Learn to use the spelling and grammar checker across the Microsoft Office apps to check your work. Correct the spelling and grammar in your documents.