Screen Ratio Calculator
Calculate screen aspect ratio from width and height. Get the simplified ratio and identify common aspect ratio formats.
How to Use This Calculator
- Enter screen width and height in pixels.
- The calculator displays the simplified aspect ratio.
- It identifies common ratio formats (16:9, 4:3, etc.).
- Use this to understand your screen\'s aspect ratio.
Screen Aspect Ratio Formula
Aspect ratio is calculated and simplified:
GCD = Greatest Common Divisor of Width and Height
Simplified Width = Width / GCD
Simplified Height = Height / GCD
Ratio = Simplified Width : Simplified Height
Example: 1920×1080: GCD = 120, Simplified = 16:9. 1600×1200: GCD = 400, Simplified = 4:3. 2560×1440: GCD = 160, Simplified = 16:9. The calculator automatically simplifies ratios and identifies common formats like 16:9, 4:3, 16:10, etc.
Full Description
The Screen Ratio Calculator calculates the aspect ratio of a screen from its width and height dimensions. Aspect ratio is the ratio of width to height, which determines how content appears on the display. The calculator simplifies the ratio using the Greatest Common Divisor (GCD) algorithm to get the simplest form (e.g., 16:9 instead of 1920:1080) and identifies common aspect ratio formats.
Common screen aspect ratios include 16:9 (widescreen, most common for modern displays), 16:10 (widescreen monitors, more vertical space), 4:3 (standard, older displays), 21:9 (ultrawide, immersive gaming), 1:1 (square), and 3:4 (portrait). The calculator automatically identifies these common ratios when you enter dimensions. Aspect ratio affects how content appears—16:9 is optimized for video, while 16:10 provides more vertical space for productivity.
This calculator helps you understand screen aspect ratios. Enter width and height, and it calculates the simplified ratio and identifies the format. Use it for screen sizing, display planning, understanding aspect ratios, or identifying your screen\'s ratio. The calculator simplifies any ratio to its simplest form for easy understanding!
Frequently Asked Questions
How is screen aspect ratio calculated?
Aspect Ratio = Width / Height. The calculator simplifies this using GCD (Greatest Common Divisor) to get the simplest ratio. Example: 1920×1080: GCD = 120, simplified = 16/9. 1600×1200: GCD = 400, simplified = 4/3. The calculator identifies common ratios automatically.
What are common screen aspect ratios?
Common ratios: 16:9 (widescreen, most common), 16:10 (widescreen monitor), 4:3 (standard, older), 21:9 (ultrawide), 1:1 (square), 3:4 (portrait). The calculator identifies these automatically. Most modern displays use 16:9 or 16:10.
How do I find my screen ratio?
Enter your screen width and height in pixels. Example: 1920×1080 → 16:9. 2560×1440 → 16:9. 1680×1050 → 16:10. The calculator simplifies the ratio and identifies the common format. You can find screen resolution in display settings.
Why does aspect ratio matter?
Aspect ratio determines how content appears on screen. 16:9 is optimized for video and movies. 16:10 provides more vertical space for productivity. 4:3 was standard for older displays. Ultrawide (21:9) provides immersive gaming. Choose based on your use case.