How to change ruler units in gimp

Written by quinten plummer
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GIMP's bordering ruler can be vital to setting the proportions in your images. Fabricated elements of your photos and graphics can be scaled appropriately in relation to other components in the image. The ruler is based on the ratio between the image's pixels and the specified unit of measure intended, such as inches and millimetres. If you'd like to use a different ruler ratio for GIMP, you have to recalibrate the ruler with your computer's monitor.

Skill level:
Moderately Easy


  1. 1

    Launch GIMP from the program's shortcut on your desktop. Click on the program's "Edit" heading, and then select the "Preferences" option from the "Edit" menu.

  2. 2

    Click on the "Display" heading in the "Preferences" menu. Click on the "Enter Manually" bubble, which is located under the "Display" menu's "Monitor" heading.

  3. 3

    Click on the menu box under the "Enter Manually" heading. Select the desired pixel/unit combination from the menu box. Click on the box's "More" option for additional pixel and unit combinations.

  4. 4

    Enter your monitor's dimensions into the "Horizontal" and "Vertical" fields to calibrate your monitor and GIMP's ruler manually. Alternatively, click on the "Calibrate" button to have GIMP automatically adjust to your new settings.

  5. 5

    Click "OK" to close the "Preferences" menu.

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