What is a .CALS File And How To Open It (Visual Guide)


Have you downloaded a file with .cals extension, but you have never seen this extension before? It is important to know how to open this file – in order to be able to work with it. In this article we will explain what .cals file extension is, how to open it and how to work with it.

What is a .CALS file?

The file extension .CALS comes from CALS Raster Graphic File. The file is a raster related file.

What to know

There is currently 1 software that can open the .cals file on 1 platform.

How to open a .CALS file?

Below you can find an easy to understand, step-by-step guide to open the .CALS file on your operating system/device.

How to open a .CALS file on Windows (7, 8, 10)

There are 4 simple steps to open the .cals file on Windows.

1. In the first step you need to download the Corel PaintShop Pro software. This software will be used for opening the file.

Step 2

Step 2: Locating your .CALS file

2. The second step is locating the downloaded file. The file can be usually found in your /download/ folder if you don’t remember where you have downloaded it to.

Step 3

Step 3: Choose “Open with”

3. In the third step right click on your file and choose “Open with”.

Step 4

Step 4: Choose the software and click ok

4. After choosing the “Open with” option, you will have an option to choose the Corel PaintShop Pro software you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .CALS file?

If you cannot open the .CALS file, it is entirely possible that you are trying to open the wrong file. There are many similar file extensions that look like the .CALS file.cam – Ucamco, .cam – CASIO, .cam – FastCAM, .cam – Microsoft, .camerror – TechSmith. You might be trying to open one of them. Please recheck the file extension again.


In this article you have learned how to open the .CALS file with the Corel PaintShop Pro program on Windows.