WhatIsMyScreenSize
Free Screen Resolution Checker Tool
The story
Overview
WhatIsMyScreenSize is designed for users who need quick, accurate information about their device's display characteristics, such as screen size, resolution, pixel density (PPI), and aspect ratio. The tool is particularly useful for web designers, front-end developers, and anyone comparing device displays for purchase or compatibility purposes.
The service operates entirely within the user's browser, ensuring complete privacy by not collecting or storing any user data. In addition to basic screen information, WhatIsMyScreenSize offers a range of supplementary tools, including viewport size checkers, device pixel ratio calculators, monitor scaling calculators, and responsive breakpoint testers. These utilities help users debug layouts, calculate optimal viewing distances, and generate CSS media queries.
For those researching or comparing devices, the platform features a comprehensive device library with detailed screen specifications for popular smartphones, tablets, laptops, and monitors. Users can browse by brand or category and compare models side by side. The site also provides educational guides and tips on topics like choosing the right monitor arm or screen protector, making it a valuable resource for both technical and general audiences.
Key features
Instant Screen Size Detection
Automatically detects and displays your device's diagonal screen size, resolution, aspect ratio, and pixel density.
Privacy-Focused Operation
All checks and calculations are performed in-browser with no data collection or storage.
Developer Layout Tools
Includes tools for checking viewport size, device pixel ratio, CSS units, and responsive breakpoints.
Device Comparison Library
Browse and compare detailed screen specifications for hundreds of popular devices.
Specialized Calculators
Access calculators for monitor scaling, desk setup, viewing distance, aspect ratio, and more.
Educational Guides
Read expert tips and guides on display technology, monitor accessories, and screen protection.
Use cases
- 1
Web and UI Designers
Quickly check device screen specs and responsive breakpoints for layout and design testing.
- 2
Front-End Developers
Debug CSS layouts and generate accurate media queries using real-time device data.
- 3
Device Shoppers
Compare screen sizes and specifications before purchasing a new phone, tablet, or monitor.
- 4
Educators and Tech Enthusiasts
Use the platform's guides and calculators to learn about display technology and best practices.
FAQ
Does WhatIsMyScreenSize collect or store any user data?
No, all operations are performed in-browser and no data is collected or stored.
What information can I get about my screen?
You can instantly see your screen's diagonal size, resolution, aspect ratio, pixel density (PPI), color depth, and device pixel ratio.
Who is this tool for?
It is designed for web designers, developers, and anyone needing accurate device display specifications.
Can I compare different devices?
Yes, the site offers a device library and comparison tool for hundreds of phones, tablets, laptops, and monitors.
Are there any costs or sign-ups required?
No, the tool and all its features are free to use without registration.
Tech stack & tags
Feedback & Discussion
Discussion
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