What Is My Screen Size? - Screen Size Calculator
Instantly discover your screen resolution, viewport dimensions, and detailed display information. All measurements update in real-time.
Understanding Screen Size & Resolution
Screen size and resolution are fundamental aspects of your display that affect everything from image clarity to how much content you can view at once. Understanding these specifications helps you optimize your workspace and choose the right settings for your needs.
Key Display Concepts
Screen Resolution
The total number of pixels your display can show, expressed as width × height (e.g., 1920 × 1080). Higher resolution means more pixels and sharper images.
Viewport Size
The visible area of your browser window where web content is displayed. This is typically smaller than your screen resolution due to browser chrome and toolbars.
Device Pixel Ratio (DPR)
The ratio between physical pixels and CSS pixels. A DPR of 2x (common on Retina displays) means 4 physical pixels are used for every CSS pixel, resulting in sharper text and images.
Aspect Ratio
The proportional relationship between your screen's width and height. Common ratios include 16:9 (widescreen), 16:10, and 21:9 (ultrawide).
Common Screen Resolutions
Budget laptops, older monitors
Most common desktop/laptop resolution
Gaming monitors, high-end laptops
High-end displays, professional work
Professional creative displays
Productivity and immersive gaming
Popular Device Display Sizes
Smartphones
Tablets
Laptops
Desktop Monitors
Frequently Asked Questions
Explore More Display Tools
Explore our comprehensive suite of testing tools to optimize your device performance and display quality.
Dead Pixel Tester
Check your screen for dead or stuck pixels with various color patterns and tests.
Screen Bleeding Test
Test your display for backlight bleeding and uniformity issues with dark patterns.
Display Test
Comprehensive monitor testing suite for dead pixels, uniformity, gradients, color accuracy, and response time.
Middle of My Monitor
Find the middle of your monitor with on-screen center lines and a crosshair marking the exact center of your screen in pixels.
PPI Calculator (Retina Display)
Calculate pixels per inch (PPI), pixel density, pixels-per-degree, retina viewing distance, and monitor dimensions from any resolution and screen size, compare two displays, or find the right screen size for your distance.
Refresh Rate Tester
Measure your display's actual refresh rate and understand your monitor's capabilities.
Explore our complete collection of testing and optimization tools