What Is My Screen Size?
Free tool to instantly check your device's screen resolution and dimensions
What is What Is My Screen Size?? Complete Overview
What Is My Screen Size? is a free online tool that instantly detects and displays your device's screen resolution, dimensions, and display specifications. It provides detailed information including viewport size, aspect ratio, pixel density, color depth, and physical measurements. The tool is designed for anyone needing accurate screen information - from web developers optimizing responsive designs to consumers comparing device specifications. It automatically detects all key display metrics without requiring any installation or registration.
What Is My Screen Size? Interface & Screenshots
What Is My Screen Size? Official screenshot of the tool interface
What Can What Is My Screen Size? Do? Key Features
Instant Screen Resolution Detection
Automatically detects and displays your screen's native resolution in pixels (width × height) along with scaled resolution values. Shows total pixel count (in megapixels) and pixel ratio for accurate display analysis.
Physical Dimension Measurement
Calculates your screen's physical diagonal size in inches and centimeters. This helps users understand both digital resolution and actual physical display dimensions for better device comparison.
Advanced Display Specifications
Provides comprehensive display details including aspect ratio (e.g. 16:9), color depth (24-bit), orientation (landscape/portrait), and widescreen status. Essential information for designers and developers.
Device Comparison Database
Includes specifications for popular devices like iPhones, iPads, MacBooks, and Samsung Galaxy models. Users can compare resolutions, pixel densities, and display technologies across devices.
Viewport Size Analysis
Shows the actual available browser window space (viewport) which may differ from full screen resolution due to browser UI elements. Crucial for web developers testing responsive designs.
Best What Is My Screen Size? Use Cases & Applications
Web Development
Web developers use the tool to test responsive designs across different screen sizes and verify viewport dimensions during website development and debugging.
Device Comparison Shopping
Consumers compare their current device's display with potential upgrades to understand resolution improvements before purchasing new phones, tablets or monitors.
Presentation Setup
Presenters check their laptop's native resolution before connecting to projectors or large displays to ensure optimal output quality and proper aspect ratio matching.
Graphic Design
Designers verify their monitor's color depth and resolution when working on high-precision visual projects to ensure accurate representation of their work.
How to Use What Is My Screen Size?: Step-by-Step Guide
Visit whatismyscreensize.com using any modern web browser on your device
The tool automatically detects and displays your screen resolution and dimensions immediately upon page load
View detailed specifications including aspect ratio, pixel count, color depth, and physical measurements
Use the 'Refresh' button to update measurements if you change device orientation or display settings
Browse the device database to compare your screen with popular smartphones, tablets and computers
What Is My Screen Size? Pros and Cons: Honest Review
Pros
Considerations
Is What Is My Screen Size? Worth It? FAQ & Reviews
Yes, the tool works perfectly on smartphones, tablets, laptops and desktop computers. It automatically adapts to detect each device's specific screen characteristics.
Viewport shows available browser space excluding toolbars and system UI elements, while screen resolution is your display's total pixel capacity. This difference is normal and important for web design.
Physical size calculations are estimates based on standard pixel densities. For precise measurements, consult your device's official specifications or use physical measuring tools.
Yes, the device database allows you to view and compare specifications for popular smartphones, tablets and computers from major manufacturers.
No, all measurements are performed locally in your browser. No personal data or screen information is collected or stored on our servers.