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How to Use the Rulers in Adobe Acrobat (PC & Mac)

By Erin Wright

This tutorial shows how to use the rulers in Adobe Acrobat. The rulers can help you align text boxes, images, buttons, form fields, and other visuals in your PDF.

First, we will turn on the horizontal and vertical rulers. Second, we will change the rulers’ unit of measurement. Third, we will use the ruler guides. Fourth, we will change Acrobat’s preferences so that the rulers appear every time you open your software. In that section, we will also change the preferences for the default unit of measurement and guide color.

Table of Contents

  1. How to Turn On the Rulers
  2. How to Change the Rulers’ Unit of Measurement
  3. How to Use the Ruler Guides
  4. How to Change the Ruler and Ruler Guide Preferences

Do you want enough more alignment help? Please see “How to Use the Grid in Adobe Acrobat (PC & Mac).” Plus, we will cover Adobe Acrobat’s measurement tool in an upcoming tutorial.

Watch all the steps shown here in real time!

Explore more than 150 writing-related software tutorials on my YouTube channel.

The images below are from Adobe Acrobat Pro DC. This process also applies to Adobe Acrobat 2020 and Adobe Acrobat 2017. In addition, the steps are similar for PC and Mac. These steps don’t apply to Adobe’s free PDF display software, Acrobat Reader.

How to Turn On the Rulers

  1. Select the View menu.
  2. Select Show/Hide from the drop-down menu.
  3. Select Rulers & Grids from the submenu.
  4. Select Rulers from the secondary submenu.
Rulers option in the View menu in Adobe Acrobat
Figure 1. Rulers option

The rulers should appear on the top and left side of the page.

Rulers in Adobe Acrobat
Figure 2. Horizontal and vertical rulers

To turn off the rulers, repeat steps 1 through 3, and then deselect Rulers in the secondary submenu, as shown in figure 1.

Pro Tip: Ruler Keyboard Shortcuts

Turn on or turn off the rulers by using the keyboard shortcut Ctrl + R (PC) or Command + R (Mac).

How to Change the Rulers’ Unit of Measurement

  1. Right-click (PC) or Control-click (Mac) on the horizontal or vertical ruler and then select an option from the shortcut menu:
    • Points
    • Picas
    • Millimeters
    • Centimeters
    • Inches
Ruler unit of measurement options in Adobe Acrobat
Figure 3. Unit of measurement options

The unit of measurement will change for the horizontal and vertical rulers.

How to Use the Ruler Guides

The ruler guides are lines that help you align objects on the page. Your rulers must be turned on to create the guides.

How to Create and Move the Ruler Guides

  1. Click the horizontal ruler and then drag your cursor down to create a guide. Alternatively, you can click the vertical ruler and then drag your cursor to the right to create a guide.
Ruler guides in Adobe Acrobat
Figure 4. Ruler guides
  1. To move the guide, select it and then use the double-headed arrow cursor to drag the guide to a new location.
Cursor to move ruler guides in Adobe Acrobat
Figure 5. Double-headed arrow cursor (enlarged to show detail)

How to Remove the Ruler Guides

  1. Right-click (PC) or Control-click (Mac) the horizontal or vertical ruler and then select Clear Guides on Page or Clear All Guides.

Alternatively, you can deselect Show Guides to hide the guides but not remove them from the page. Therefore, you can choose to reselect Show Guides later, and they will appear in the same locations.

Show guides and Clear guides options in Adobe Acrobat
Figure 6. Show Guides, Clear Guides on Page, and Clear All Guides options
  1. To delete an individual ruler guide, select and hold it while you press the Delete key on your keyboard. (However, this method will not work if the Edit PDF toolbar is open.)

How to Change the Ruler and Ruler Guide Preferences

You can change Acrobat’s preferences so that the rulers appear every time you open your software. In addition, you can change the default unit of measurement and the color of the ruler guides.

  1. Select the Edit menu (PC) or the Adobe Acrobat menu (Mac).
  2. Select Preferences from the drop-down menu. (PC users see figure 7; Mac users see figure 8.)
Preferences option in the Edit menu in Adobe Acrobat for the Pc
Figure 7. Preferences option in the Edit menu (PC)
Preferences option in Adobe Acrobat for Mac
Figure 8. Preferences option in the Adobe Acrobat menu (Mac)
  1. Select the Units & Guides category in the Preferences dialog box.
  2. Use the Page & Ruler Units menu to select a new default unit of measurement.
  3. Use the Guide color menu to select a new default guide color.
  4. Select Show rulers when opening document to turn on the rulers by default.
  5. Select the OK button.
Ruler and guide options in the Preferences dialog box in Adobe Acrobat
Figure 9. Ruler and guide options

Related Resources

How to Convert Web Pages and Websites to PDFs in Adobe Acrobat (PC & Mac)

How to Create Bulleted and Numbered Lists in Adobe Acrobat (PC & Mac)

Updated September 11, 2022

Filed Under: Adobe Acrobat Tagged With: Adobe Acrobat DC, formatting

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Hello! My name is Erin. I am a technical writer and editor who shares writing-related software tutorials on this website and on YouTube.

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