How to Change the Language in Microsoft Word
Microsoft Word lets you control language at several different levels — and that distinction matters more than most people realize. You can set the language for spell-checking and grammar, change the display language of the Word interface itself, or apply a different language to a specific block of text. These are three separate settings, and mixing them up is the most common reason people get stuck.
Here's how each one works.
Understanding the Two Types of Language Settings in Word
Before touching any menus, it helps to know what you're actually changing:
- Editing/proofing language — the language Word uses to check spelling and grammar. This can be set globally or on a per-document basis, even down to a single paragraph.
- Display language — the language of Word's menus, buttons, and interface. This is tied to your Microsoft 365 language pack and sometimes to your operating system settings.
These settings live in different places and changing one does not change the other.
How to Change the Proofing Language in Word
This is the most commonly needed adjustment — especially if you're writing in a language different from your system default, working with multilingual documents, or you've received a file where spell-check is running in the wrong language.
On Windows
- Open your document in Word.
- Select the text you want to change (or press Ctrl + A to select all).
- Go to the Review tab on the ribbon.
- Click Language, then select Set Proofing Language.
- Choose your desired language from the list and click OK.
If you want this to apply to all new documents going forward, click the Set As Default button in that same dialog box. This updates the Normal template, which controls default behavior for new files.
On Mac
- Select your text (or use Cmd + A for all).
- Go to Tools in the menu bar.
- Click Language.
- Choose your language and click OK.
In Word for the Web
The web version of Word has more limited language controls. You can find basic proofing language options under Review > Spelling & Grammar, but advanced default-setting features are generally only available in the desktop app.
How to Change the Display Language in Word 🌐
If you want Word's interface — the ribbon labels, dialog boxes, tooltips — to appear in a different language, that requires installing a language pack and adjusting your Office settings.
On Windows (Microsoft 365)
- Open any Office app and go to File > Options.
- Select Language from the left sidebar.
- Under Office display language, click Add a language if your target language isn't listed.
- Follow the prompts to install the language pack (this may redirect you to the Microsoft Store or require a download).
- Once installed, select the language and use Move Up to set it as preferred.
- Restart Word for changes to take effect.
On Mac
Display language in Word for Mac typically follows the system language set in System Settings > General > Language & Region. Changing the system language and restarting Word is usually the most reliable approach.
Working with Multiple Languages in One Document
This is where Word's language tools become genuinely powerful. You can assign different proofing languages to different sections of the same document — useful for legal translations, academic work, or bilingual content.
| Scenario | What to Do |
|---|---|
| Entire document in one new language | Select all (Ctrl+A), set proofing language, set as default |
| One section in a different language | Highlight that section only, set proofing language |
| Switching interface language | Install language pack via File > Options > Language |
| Language keeps reverting | Check AutoCorrect settings and template defaults |
One common frustration: Word can automatically detect language based on what you type. This feature is helpful for multilingual writers but can also cause unexpected language switches. You'll find the toggle for this in the same Set Proofing Language dialog — there's a checkbox labeled Detect language automatically. Turning it off gives you manual control.
Why the Language Keeps Reverting ⚠️
If you set a language and it keeps switching back, the issue is almost always the document template. Word's default template (Normal.dotm) has its own language settings baked in, and new documents inherit from it. If you only changed the language in your current document without updating the template default, the next document you open will revert.
The fix: after setting your proofing language, always check whether you want to click Set As Default — or be aware that the change applies to the current document only.
Another cause is pasted text. When you paste content from another source, Word can carry over the language formatting embedded in that text. Pasting as plain text (Ctrl + Shift + V on Windows) strips that formatting and lets your document's language settings apply cleanly.
The Variables That Affect Your Experience
Not every user's situation is identical, and a few factors shape which steps will work for you:
- Word version — Steps differ meaningfully between Word 2016, Word 2019, Word 2021, and Microsoft 365. The subscription-based Microsoft 365 version has the most current and complete language options.
- Operating system — Display language behavior on Mac is more tightly coupled to macOS system settings than on Windows.
- License type — Standalone (perpetual) versions of Word may not have access to the same language pack downloads as Microsoft 365 subscribers.
- Document origin — Files created on another system or in another app can carry unexpected language metadata that conflicts with your preferences.
- IT-managed installations — In business or school environments, language settings and available language packs may be controlled by an administrator, limiting what individual users can change. 🔒
Getting proofing language and display language exactly right depends on which of these variables applies to your setup — and whether you need the change to apply to just one document, all future documents, or the interface itself.