Why use this calculator
Aspect ratios are critical for video production, web design, and display selection. This calculator simplifies any resolution into its aspect ratio and compares it to common standards.
How to use it
Enter the width and height in pixels. The calculator simplifies the ratio using the greatest common divisor and shows the closest standard aspect ratio for reference.
The formula
Aspect Ratio = Width / GCD(Width, Height) : Height / GCD(Width, Height); Diagonal = sqrt(Width^2 + Height^2)
Worked examples
1920 x 1080 display
16:9 aspect ratio, 2,073,600 total pixels
2560 x 1600 display
16:10 (8:5) aspect ratio, 4,096,000 total pixels
When people use it
- Choosing the right monitor or TV screen
- Preparing video content for different platforms
- Resizing images while maintaining proportions
- Designing responsive web layouts
Tips
- 16:9 is the most common widescreen ratio used for TVs and monitors.
- 4:3 is the traditional standard definition ratio.
- Ultrawide monitors typically use 21:9 or 32:9 ratios.
- When resizing images, maintain the aspect ratio to avoid distortion.
Questions people ask
- What is the most common aspect ratio?
- 16:9 is the most widely used aspect ratio for modern displays, televisions, and video content including YouTube and streaming services.
- How do I maintain aspect ratio when resizing?
- Multiply or divide both width and height by the same factor. For example, to halve a 1920x1080 image, use 960x540.