Microsoft Word features a powerful AutoFormat engine that constantly monitors your keystrokes to improve typographical aesthetics. If you type the number 1, followed by a forward slash (/), and then the number 2 (1/2), Word will instantly intercept your typing and automatically convert those three distinct characters into a single, specialized typographical glyph (½).
While this makes cooking recipes and standard text look much more professional, it is a complete disaster for technical writing. If you are writing a mathematical equation, drafting a programming tutorial, or entering specific product serial numbers that contain slashes, you absolutely cannot have Word shrinking your characters into tiny fractions. It breaks the visual flow and can cause copy-and-paste errors when moving the text into other applications.
You can disable this specific typographical substitution to force Word to respect your raw keystrokes.
How to Turn Off Automatic Fractions
You can disable the fraction conversion deep within the AutoCorrect options.
- Open your document in Microsoft Word.
- Click on File in the top-left corner of the ribbon.
- Click on Options at the bottom of the left sidebar.
- In the Word Options window, select Proofing from the left-hand navigation pane.
- Click the AutoCorrect Options… button in the main pane.
- A new dialog box will open. Click on the tab labeled AutoFormat As You Type.
- Look under the “Replace as you type” section.
- Uncheck the box labeled Fractions (1/2) with fraction character (½).
- Click OK twice to close both windows and save your changes.
Microsoft Word will instantly stop meddling with your slashes. If you type 1/2 or 3/4, the text will remain exactly as three distinct, full-sized characters on the page.