Adobe Photoshop's rulers prove invaluable when cutting, merging, or editing images. Additionally, you can effortlessly set the display units in pixels, percentages, or inches.

How to Display Rulers
If you don't see the rulers at the edge of the workspace, navigate to
View> Rulersor use keyboard shortcuts
Ctrl + R (Command + R on Mac).You can also hide the rulers with similar commands.

How to Change Measurement Units
Adobe Photoshop supports seven types of units, including:- Pixel
- Inch
- Centimeter
- Millimeter
- Point
- Pica (1 pica = 12 points)
- Percentage
The quickest way to switch between unit types is to right-click on the ruler and choose your desired option from the dropdown menu.

You can also alter the units through Photoshop's preference panel. Open
Edit> Preferences> Units & Rulers.(For Mac, go to Photoshop> Preferences> Units & Rulers.)
Under the
Units, choose the dropdown menu
Access 'Rulers', then select the unit you want to use.

Conclusion:
Above is a guide on changing measurement units in Adobe Photoshop. Additionally, you can explore more useful tips on Mytour. We hope this article proves helpful to you. Wish you success.
- Explore more: Photoshop Tips and Tricks