How to insert an equation in Word on Mac: Microsoft 365 steps and Control+= shortcut

This guide covers the desktop app for Mac, the Word you open from the Dock or the Applications folder. I found no Microsoft article written only for equations in Word on Mac. So some steps below come from Microsoft's cross-platform guides and from a third-party walkthrough. Where a detail is not confirmed, the page says so.

Which Word for Mac you have

Equation steps apply across several recent versions. Microsoft's Math AutoCorrect guide covers Word for Microsoft 365 and Word 2024 on Mac. It also covers Word 2021, 2019 and 2016 on Mac and Windows, and Word for Mac 2011. The guide tells you to select Insert, then Equation. The latest desktop build in Microsoft's release notes is 16.114.3, build 26102720, released October 27, 2026.

• Word for Microsoft 365 for Mac, the subscription app that most people use today.
• Word 2024 for Mac, which the same Microsoft guide covers.
• Word for the web, which runs in a browser and uses a different equation panel. See the web section below.
• Word for Mac 2011, listed in the guide, though it is the oldest version covered here.

Insert an equation from the Insert tab

The most visible route runs through the ribbon. Click Insert at the top of the Word window. Find the Symbols group. The Equation button sits there. Microsoft describes it as a split button, so the arrow beside it opens a drop-down menu. Click the main part when you want a blank equation right away.

Use the ribbon route the first time you insert an equation. It shows you where the button lives on your copy of Word. Once you know the spot, the shortcut saves a trip to the ribbon. Both routes end in the same equation box.

Use Control+= to skip the ribbon

Control+= is the Mac shortcut that opens the equation tool. Microsoft's Math AutoCorrect guide lists it, and Editorworld confirms it. Press it with the cursor in the body text. An equation box appears with placeholder text, and the Equation Tools Design tab opens by itself. The same Microsoft guide lists Alt+= for Windows.

Type linear codes and convert them to Professional format

Linear input is plain typed code that Word turns into math. You type a code, then press a space or a punctuation mark. Word converts the code into a structure. Microsoft's linear format guide describes UnicodeMath codes such as \frac and \sqrt. Codes are case-sensitive, so a capital letter can stop the conversion.

Professional format is the finished layout. To switch, select the equation and choose Convert > Professional. Microsoft also lists Ctrl+= for this step. Its guide does not list a separate Mac shortcut, so test the key on your copy. To return to editable code, press Ctrl+Shift+=.

Use LaTeX input if you have Microsoft 365

Word for Microsoft 365 subscribers can also type LaTeX. Microsoft calls LaTeX input new. The choice sits on the Equations tab next to UnicodeMath. Other Office apps support only UnicodeMath. If a colleague opens your file in an older Office app, convert the equation to Professional format before you share it.

Number equations and update the numbers

Numbered equations show up in papers, reports and lab notes. Editorworld says Fn+F9 updates equation numbers on a Mac. The article does not walk through the full numbering setup. Test your numbering in a short sample document before you rely on it in a long report.

Word for the web: a different equation panel

In Word for the web, Insert > Equation opens the Equation Tools panel. Pick a symbol or structure from the Symbols and Structures tabs. Structures > Fractions adds a fraction. Edit the formula in the box at the top of the panel. Then select Insert on page. Microsoft says the steps differ slightly from the desktop app, and it lists no web shortcuts.

Two limits apply on the web. Editorworld says Ink to Math is not available in Word for the web. It also says Alt+= works only in some browsers and not others. If you need full desktop features, open the file in the Mac app.

Subscript and superscript for simple math

Some formulas need only light formatting. H2O or x squared inside a sentence is one example. You do not need an equation for those. A Microsoft Q&A answer gives Shift+Command+minus for subscript and Shift+Command+= for superscript in Word for Mac. Select the character, then press the shortcut.

Shortcuts can shift between Word releases. In one Microsoft Q&A thread, the original poster said Command+minus now zooms the view. Microsoft did not confirm that in the thread. If a shortcut behaves oddly, open Tools > Customize Keyboard. It sits at the bottom of the Tools menu, and you can assign a different key there.

When Control+= does nothing

The most common cause is an older build. A Microsoft Q&A thread from May 2, 2025 reports that Control+= stopped opening the Equation tab on version 16.96. The same thread says typed codes such as 3^2 stopped converting. The poster said that updating to the latest version fixed it.

Update Word, restart it, and test the shortcut again. Microsoft's release notes list 16.114.3, build 26102720, released October 27, 2026, as the most recent Word for Mac release. If your build is older than that, update before you go further.

• Confirm the cursor is in body text, not in a header or footer.
• Press a space or a punctuation mark after each typed code.
• Check the case of each code, since codes are case-sensitive.
• A non-accepted answer in a Microsoft Q&A thread suggests Convert > All-Professional for a stuck equation.
• If the shortcut stays silent, use Insert > Equation from the ribbon.

Mistakes people make with equations in Word

• Pressing Command where Control is needed. The equation shortcut is Control+=.
• Typing a code and moving on without a space. Word waits for the space or punctuation mark.
• Using the wrong case, such as \Frac instead of \frac. Codes are case-sensitive.
• Formatting plain text to look like math when a real equation would be clearer.
• Assuming the web panel works like the desktop app. Microsoft says it works slightly differently.
• Trusting a shortcut after an update without testing it first.

Most equation problems come down to the same few causes. Check the key, the space after the code, the case of the code, and the version. If none of those help, use the ribbon route. It is slower, but it shows you exactly where the Equation button sits.

A worked example: fraction and exponent

Say you want the expression a over b, plus c squared. Click in the body text and press Control+=. Type a/b, then a space. Type +c^2, then a space. Word converts the fraction and the exponent after each space. Select the whole equation and choose Convert > Professional to finish it.

Check the result at normal zoom. The fraction should stack, and the exponent should sit above the line. If something looks wrong, press Control+Shift+= to return to linear code. Then fix the code and convert it again.

Next steps after the equation looks right

Save the file in the format your readers need. If a colleague on Windows will open it, test the equation on that machine too. Microsoft's Math AutoCorrect guide lists symbol commands you can type. Those help when you use the same symbols often.

If you are writing a paper, the next step is often a source list. The citation guide covers that step. For a longer report, the table of contents guide shows how to add navigation.