• You can change the language in PowerPoint in three different ways to help with editing or translating, or to set your display settings in another language.
• To change the language settings in PowerPoint for editing purposes, you'll need to access the "Language..." option in the "Tools" tab.
• To translate text, you can launch the Translator tool instead.
• If you're looking to change the display language, you'll have to change your operating system settings.

If you want to change the language in PowerPoint, the presentation program offers you three different options depending on what you need.

You can change the editing language, which tells PowerPoint how to edit text as you type in your preferred language. This may prove particularly helpful if you've been sent a slideshow to edit that's written in another language.

You can also select "Translate…" to use the Translator tool on text in real-time, though Microsoft Office notes that this feature is only available for users with an Office 365 subscription, Office 2019 for Mac or Windows. This feature allows you to highlight entire text boxes or individual words and transform your presentation text any of the languages PowerPoint offers

Lastly, you change the display language on PowerPoint by altering your operating system's language setting. On a Mac, depending on the language, you may be asked to add input sources.