Monitor sizes are based on diagonal inches. Would the height/width be off if your monitor is 16:9 or 16:10 or some non 4:3 ration? My monitor is a 23" 16:9, and the image is bigger than an actual controller held on top of it. Shop the best deals on Xbox bundles online including the Xbox One X, Xbox One S and more consoles! Explore console and game bundles at JB Hi-Fi today.