'What is my screen reslution' is an online tool to check screen resolution of any display device. Using whatismyscreenresolution.net, you can test resolution of your monitor, iPad, tablet, iPhone, MacBook or any other display device. Screen resolution Monitor, Telivision, Mobile device or any display device is the number of pixels in x and y dimensions. The Screen resolution is generally measured as width x height in pixels. For example resolution 1920 x 1080 means the 1920 pixels is width and 1080 pixels is height of the screen. However your current screen resolution may be less than max supported screen resolution. So you can change your screen resolution from your device settings.