Aspect Ratio Calculator
Calculate aspect ratios and find missing dimensions from known ratios.
How to Use Aspect Ratio Calculator
1
Enter width and height, or ratio and one dimension
2
View the calculated aspect ratio or missing dimension
3
See common ratio presets
Key Features
Ratio calculation from dimensions
Missing dimension finder
Common presets (16:9, 4:3, etc.)
Simplification
Tips & Tricks
16:9 is standard for video and monitors
4:3 is traditional TV and presentation format
Frequently Asked Questions
Aspect ratio is the proportional relationship between width and height. 16:9 means for every 16 units of width, there are 9 units of height.