Convert ICO to CAL
Convert ICO images to CAL format, edit and optimize images online and free.
Drop Files Anywhere to Upload
The ICO file extension, standing for "Icon", is integral to Microsoft Windows for storing icons of different sizes and color depths. Its primary use is to display graphical representations of executable programs, files, and folders within the Windows operating system. The ICO format's origins trace back to the early versions of Windows, evolving over the decades to support enhanced resolutions and alpha transparency. Today, ICO files ensure visually consistent and scalable icons that maintain their appearance across various display settings, aligning with modern user interface standards.
The CAL file extension, known as CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image, is a 1-bit black-and-white raster image format developed by the U.S. Department of Defense in the mid-1980s to standardize graphics data interchange for military documentation. It is primarily used for storing and sharing monochrome images while retaining orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images.
Select any ICO image you wish to convert by clicking the Choose File button.
For an advanced conversion, use the ICO to CAL optional tools available on the preview page and click the Convert button.
Wait a few moments for the converter to complete its job, then download your CAL file.
To change ICO format to CAL, upload your ICO file to proceed to the preview page. Use any available tools if you want to edit and manipulate your ICO file. Click on the convert button and wait for the convert to complete. Download the converted CAL file afterward.
Follow steps below if you have installed Vertopal CLI on your macOS system.
cd to ICO file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Windows system.
cd to ICO file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Linux system.
cd to ICO file location or include path to your input file.