How to Change Default Units in Photoshop

In this article, you will learn how to change the units of measurement in Photoshop to fit your preference depending on what the end goal of the artwork is.

Change the Default Units in Photoshop

Different artworks must be put to scale depending on the end goal. Measurements are very important especially when printing is the end goal. This is made possible by Units. Photoshop supports several units of measurement including pixels, inches, Points, Picas, Percent, Centimeters, and millimeters.

As an artist, you may want to change your units in Photoshop for consistency especially if most of your projects require a specific measurement, precision or efficiency. Whichever the case, you will find yourself switching to different units from time to time.

In this article, you will learn how to switch the units of measurement in Photoshop.

Changing the units of measurement in Photoshop

By default, Photoshop will pick up on the units you were using on the previous project, to change that, follow the steps below.

Method 1

  1. Open your Photoshop and press ctrl + R to open up the rulers on the edge of your document if they are not visible.

  2. Once open, right-click on the rulers and you will see the different units of measurement.

    Img 1.png

    Currently, my Photoshop is using Inches as the units of measurement as seen in the image.

  3. Select the unit you want to use and your whole document will use that unit for measurement. This unit will be used throughout unless you change it again.

Method 2

You can also switch the units using the preferences window. To do that,

  1. Open Photoshop and click on edit at the top left corner of your Photoshop.

  2. On the pop-up, hover over the preference setting and choose Units & Rulers as shown in this image.

    Img 2.png

    This will open up the units settings window.

  3. On this window, click on the Rulers dropdown to show the other units of measurement then choose the one that suits your needs.

    Img 3.png

  4. Just like that, you have changed the units for your document.

Note: keep in mind that the option you choose here will reflect on all the other projects even after closing and opening photoshop again. So if you need to make changes again, follow the steps shown above.


As seen in this guide, units play a huge role when making art. It is even more crucial when your artwork is for printing purposes. You should switch units depending on the project you are working on. This guide has shown you 2 methods that you can use to switch the units to your preference.

If you found the article helpful, share it with your friends who may be interested.

Thank you for reading : )

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