Your resolution, aspect ratio, pixel ratio, and more, detected instantly. No clicks, no downloads.
Using your detected …. Enter your monitor's diagonal to get exact pixel density.
Six fast, browser-based tools. No sign-up, no install, no data leaves your device.
Detect your exact resolution and display details instantly.
Open tool →Reduce any width and height to a clean ratio like 16:9.
Open tool →Pixel density from resolution and screen size, in seconds.
Open tool →Work out physical width, height, and diagonal in inches.
Open tool →See two resolutions side by side, pixels and sharpness.
Open tool →Every common standard from 720p to 8K in one table.
Open tool →Screen resolution is the number of distinct pixels your display can show, written as the horizontal count times the vertical count. A 1920 × 1080 screen packs roughly 2.1 million pixels into the panel. The more pixels you have, the finer the detail in text, images, and video.
Resolution alone doesn't tell the whole story. Two screens can share the same resolution but differ in size, which changes how dense those pixels feel. That density, measured in pixels per inch (PPI), is what makes a phone look razor-sharp and a large TV look softer up close.
The third piece is aspect ratio, the width-to-height shape that decides whether a screen is standard 16:9 or ultrawide 21:9. Resolution, pixel density, and aspect ratio are the three numbers behind every display, and together they explain how any screen looks.
Every screen comes down to three measurable things. Understand these, and any resolution or spec sheet makes sense.
What the pixel count really means, plus every standard from 720p to 8K explained in one guide.
Read the guide →The shape of your screen, from 16:9 to 21:9 ultrawide, and how to work it out from any resolution.
Read the guide →Pixel density, the real measure of sharpness, and why screen size changes how crisp a resolution looks.
Read the guide →Free, private, and instant. No sign-up, nothing uploaded.