How to Convert ICO to ICNS

by Diana Braun

The ".ico" file extension identifies an icon file on a Windows computer. If you want to use that same icon file on a Mac computer, you must convert it to an ICNS file, which is the file type associated with icons on a Mac. An online icon conversion tool can help you easily convert an icon file from the ICO extension to a Mac-compatible ICNS file.


Launch a Web browser and navigate to a website that offers an icon conversion tool such as


Convert your ICO file using the "Browse" feature of the site.


Click the “Convert” button.


Click the “Save” button when prompted to save the converted ICNS file locally to your computer.

About the Author

Diana Braun began her writing career as a consultant and technical writer for a software company focusing on how-to, training, white paper, and internal process documentation. After two years, Braun left to pursue her entrepreneurial dreams. Since then, she has launched several startups including a t-shirt business, an online marketing and advertising t-shirt distribution business, and an entertainment site. She currently resides in South Florida.