ScreenResolutionDB

What Is My Screen Resolution?

Check Your Screen Resolution

Use our Screen Resolution Test tool to instantly detect your current display’s resolution, device pixel ratio, color depth, and viewport size. The tool runs entirely in your browser — no data is sent to any server.

What Is Screen Resolution?

Screen resolution is the number of pixels your display can show, expressed as width × height. A resolution of 1920 × 1080 means the screen has 1,920 pixels horizontally and 1,080 pixels vertically, for a total of 2,073,600 pixels.

Higher resolution means more pixels, which translates to sharper text, more detailed images, and more content visible on screen at once.

Common Screen Resolutions

ResolutionNameTotal PixelsCommon Devices
1366 × 768HD1,049,088Budget laptops
1920 × 1080Full HD (1080p)2,073,600Most monitors, TVs, laptops
2560 × 1440QHD (1440p)3,686,400Gaming monitors, premium laptops
2560 × 1600QHD+4,096,000MacBook Air, modern laptops
3840 × 21604K UHD8,294,400High-end monitors, TVs
5120 × 28805K14,745,600Apple Studio Display, iMac

What the Detected Values Mean

Logical Resolution

The resolution your operating system reports to your browser. On high-DPI displays (Retina, HiDPI), this is lower than your physical resolution because the OS scales the interface. For example, a MacBook Pro with a physical resolution of 3024 × 1964 might report a logical resolution of 1512 × 982 at 2× scaling.

Physical Resolution

Your screen’s actual hardware pixel count. This is calculated by multiplying the logical resolution by the device pixel ratio: physical = logical × DPR. This is the number listed in your device’s specifications.

Device Pixel Ratio (DPR)

The ratio of physical pixels to CSS pixels. A DPR of 1 means one physical pixel per CSS pixel (standard displays). A DPR of 2 means four physical pixels per CSS pixel (Retina/HiDPI), resulting in sharper rendering. Common values:

  • 1× — Standard monitors (1080p, 1440p at 100% scaling)
  • 1.25×, 1.5× — Windows laptops with moderate scaling
  • 2× — Apple Retina displays, high-end monitors at 200% scaling
  • 3× — High-end smartphones (iPhone 12-16 Pro/Pro Max)

Color Depth

The number of bits used per pixel. 24-bit (8 bits per channel) supports 16.7 million colors and is the most common. 30-bit (10 bits per channel) supports over 1 billion colors and is found on professional HDR monitors.

Aspect Ratio

The proportional relationship between width and height. The most common aspect ratios are 16:9 (widescreen), 16:10 (many laptops), and 21:9 (ultrawide monitors). Learn more in our Aspect Ratios Explained guide.

Useful Tools

Frequently Asked Questions

Why does my screen resolution look different than my display's specs?
Your operating system may use display scaling, which reports a logical resolution lower than your physical resolution. For example, a MacBook Pro with a 3024x1964 physical resolution may report 1512x982 as the logical resolution at 2x scaling (200%).
What is device pixel ratio?
Device pixel ratio (DPR) is the number of physical pixels used to render one CSS pixel. A DPR of 2 (common on Retina displays) means each CSS pixel is drawn with a 2x2 grid of 4 physical pixels, making content look sharper.
What is the difference between screen resolution and viewport size?
Screen resolution is the total pixel count of your display. Viewport size is the visible area of your browser window, which is smaller because it excludes browser chrome (toolbars, scrollbars). The viewport changes when you resize the browser; screen resolution stays constant.
How do I check my actual hardware resolution?
Multiply the logical resolution by the device pixel ratio (DPR). If your browser reports 1920x1080 with a DPR of 1, your hardware resolution is 1920x1080. If it reports 1512x982 with a DPR of 2, your hardware resolution is 3024x1964.