The Screen Resolution Tester shows the width and height (in pixels) of your device’s screen. It works directly in your browser and can be used on any device, including mobile phones, laptops, monitors, and TVs.
This tool also displays the total pixels available, which is helpful when comparing screens with different resolutions.
It updates in real-time and adjusts when you move your browser between different screens connected to the same device.

Some of the most popular and standard screen resolutions and are:
1. SD – 640 x 480 pixels
2. QHD – 960 x 540 pixels
3. HD – 1280 x 720 pixels
4. Full HD – 1920 x 1080 pixels
5. QHD or 2K or 1440p – 2560 x 1440 pixels
6. UHD or 4K or 2160p – 3840 x 2160 pixels
7. 5K resolution – 5120 x 2880 pixels
8. UHD 8K or 4320p – 7680 × 4320 pixels

1. The width and height of your screen are shown automatically.
2. It also displays the total pixels available on your screen.
3. The resolution updates in real-time when you move your browser to another screen (monitor, TV, or projector).
4. On mobile or high-DPI devices, the resolution may adjust to make text easier to read.
5. You can change “Display Scaling” on your device to zoom in or reset the screen view.
6. Your data is not stored—everything happens inside your browser.

Screen resolution is to the total number of pixels displayed on an electronic screen, measured in width and height. It is typically represented as width × height.
For example, a resolution of 1280 × 800 means the screen has 1280 pixels in width and 800 pixels in height, resulting in a total of 1,024,000 pixels.

The resolution of 1920 x 1080 is standard for a basic monitor. Those numbers just mean the height of your screen contains 1,080 pixels (full HD) and the width has 1,920 pixels. Multiplied together, your screen resolution of 1920 x 1080 means your screen has 2,073,600 pixels.

A 1280 × 800 resolution works well for smaller devices like tablets, but compared to today’s standards, it’s on the lower side. Modern resolutions like 1080p (1920 × 1080) and 4K offer much sharper and clearer visuals.

No, the resolution of your screen does not affect Internet speed. The resolution of videos you watch or download may affect their speed, depending on the file size. However, your screen resolution has no bearing on Internet speed on its own.