The ruler in Word is enabled by clicking the View tab and checking the Ruler box. The horizontal ruler appears immediately at the top, while the vertical ruler depends on a separate display setting.
The ruler is one of the most useful tools in Microsoft Word for controlling margins, indents, and tab stops. Figuring out how to enable the ruler in Word takes about one second once you know the right tab to open. This quick guide covers the exact steps for both Windows and Mac, how to get the vertical ruler back if it is missing, and how to customize the unit of measurement.
Enabling The Ruler In Word: The Steps That Work
Enabling the ruler in Word is done through the View tab on the ribbon. This process is identical across Word for Microsoft 365, Word 2021, Word 2019, and Word 2016.
- Open your document in Microsoft Word.
- Click the View tab on the top ribbon menu.
- In the Show group, check the Ruler checkbox.
- The horizontal ruler will appear immediately at the top of the document.
If the vertical ruler on the left side is still hidden, there is a second setting that controls it. These steps match Microsoft’s official documentation on using the ruler.
Where Is The Vertical Ruler?
The vertical ruler on the left side of the document window is a separate toggle. If it is not showing, it needs to be enabled in the Word Options menu.
- Go to File > Options.
- Select the Advanced category on the left.
- Scroll down to the Display section.
- Check the box labeled Show vertical ruler in Print Layout view.
- Click OK to apply the change.
The vertical ruler only appears in Print Layout view. If you are in Web Layout or Read Mode, the vertical ruler will not show up regardless of this setting.
Why Isn’t The Ruler Showing Up?
If you have checked the Ruler box and the rulers are still missing, one of these common issues is usually the cause.
| Problem | Likely Cause | The Fix |
|---|---|---|
| No rulers at all | Ruler checkbox is unchecked | View tab > Show group > check Ruler |
| Only horizontal ruler is visible | Vertical ruler setting is disabled | File > Options > Advanced > Display > check Show vertical ruler in Print Layout view |
| Ruler is grayed out | Cursor is inside a table, header, or footer | Click in the main body of the document |
| Ruler disappears after clicking | White space between pages is hidden | File > Options > Advanced > Display > check Show white space between pages |
| No rulers in Read Mode | Ruler is disabled in Read Mode | Switch to Print Layout view on the View tab |
| Using an older version (Word 2010) | Different menu path | Click the View Ruler button at the top of the vertical scroll bar |
Can I Change The Ruler’s Measurement Unit?
Yes. You can switch the ruler from inches to centimeters, millimeters, points, or picas. This is useful when formatting documents for international standards or academic submission guidelines.
- Go to File > Options > Advanced.
- Scroll to the Display section.
- Find the dropdown for Show measurements in units of.
- Select your preferred unit (Centimeters, Millimeters, Points, or Picas).
- Click OK.
The ruler updates immediately to show the new unit marks.
How To Enable The Ruler In Word On Mac
The steps on a Mac are nearly identical, but the Preferences menu is accessed differently than the Windows Options menu.
- Click Word in the top menu bar.
- Select Preferences.
- Under Authoring and Proofing Tools, click View.
- Check the box for Vertical ruler.
- Close the Preferences window.
- Click the View tab on the ribbon and check the Ruler box.
On a Mac, holding the Option key while dragging ruler markers displays the precise measurements for alignment.
Using The Ruler For Precise Formatting
Once the ruler is visible, it becomes a hands-on control panel for your document layout. The markers on the ruler control indentation and tab stops with drag-and-drop ease.
- Margins: Drag the gray shaded area on the ends of the horizontal ruler to adjust the left and right margins.
- Indent Markers: The small triangles and rectangle on the left side of the ruler control first-line indent, hanging indent, and left indent. The triangle on the right controls the right indent.
- Tab Stops: Click the tab selector button on the far left of the ruler to cycle through Left, Center, Right, Decimal, and Bar tab types. Click on the ruler to place a tab stop. Drag it off the ruler to remove it.
- Alt Key Precision: Hold the Alt key (Windows) or Option key (Mac) while dragging any ruler marker. The ruler switches from generic ticks to exact measurements like “1.00 in” or “2.54 cm” for pixel-perfect placement.
| Feature | Microsoft 365 | Word 2021/2019 | Word for Mac | Word Online |
|---|---|---|---|---|
| Enable Horizontal Ruler | View > Ruler | View > Ruler | View > Ruler | View > Ruler |
| Enable Vertical Ruler | File > Options > Advanced | File > Options > Advanced | Word > Preferences > View | Not available |
| Change Units | File > Options > Advanced | File > Options > Advanced | Word > Preferences > General | Not available |
| Alt Key Precision | Yes | Yes | Yes (Option key) | No |
Ruler Setup Checklist
If the ruler is still not cooperating, run through this final checklist to cover every possible setting.
- ☐ The View tab is selected and the Print Layout view is active.
- ☐ The Ruler checkbox is checked in the Show group.
- ☐ The Show vertical ruler in Print Layout view is checked in File > Options > Advanced > Display.
- ☐ The Show white space between pages option is enabled in the Advanced Display settings.
- ☐ The cursor is in the main document body, not inside a table or header/footer.
Once these four conditions are met, the ruler will stay visible and functional across every document you open.
References & Sources
- Microsoft. “Using the ruler in Word.” Official support article covering how to show and use the ruler.