What monitor do I have, and what can it do?
Asking what monitor do I have usually sends you to a sticker on the back of the stand, or to Device Manager, which often answers with Generic PnP Monitor. Monitor Info skips both. It reads the identification data the monitor itself sends to the PC and shows the model name it stores there, next to everything Windows can tell you about that screen.
Open the app and every connected display appears on a drafting sheet, side by side and at one shared scale. Width, height and the diagonal are marked on each one, so a laptop panel beside a 27 inch desk monitor looks exactly as small as it is. Each drawing carries the number Windows uses for it, the same number you see in Display settings.
Click a screen and its details fill four groups: Picture, Size, Color and Connection. Anything a monitor does not report reads Not reported, rather than a guess.
What size is my monitor? Diagonal, visible area and PPI
The advertised size of a monitor is rounded, and it is rarely printed anywhere you can see while seated. The Size group works it out from the physical dimensions the panel reports: the Diagonal in inches and centimeters, the Visible area as width by height, and Pixel density in PPI, calculated from the panel width and its native resolution.
Use the Units setting to switch the drawing and the measurements between Millimeters and Inches. A scale bar under the sheet marks 100 mm, or 4 in, so you can judge the drawing by eye.
How to check monitor refresh rate and resolution
The Picture group answers the questions people search for after buying a high refresh rate screen, or when a game feels less smooth than it should.
- Resolution, with a Native tag when it matches the panel's own resolution, or a note such as Native is 3840 × 2160 when Windows is running it at something lower.
- Refresh rate in Hz, as the display is running right now. If it reads 60 Hz on a 144 Hz monitor, the cable or the Windows setting is holding it back.
- Scale, the percentage Windows uses to enlarge text and apps.
- HDR: Supported, on, Supported, off or Not supported. When Windows does not say, a panel rated above 400 nits reads Likely supported.
Monitor specs Windows hides: color range, nits and port
The Color group turns the red, green and blue primaries a monitor reports into a Color range figure, given as a share of DCI-P3 and of sRGB and plotted on a small chart. Beside it are the White point, marked D65 when it is the standard daylight white, and Brightness as peak and minimum nits.
Connection shows the Connector (HDMI, DisplayPort, USB-C (DisplayPort), DVI or VGA), the Graphics adapter driving it, and Made: the maker and the week and year the panel was built, when the monitor records them. That last line is handy for checking whether a used or refurbished screen is as new as the seller says.
