Tech
Aspect Ratio Calculator
An aspect ratio calculator simplifies width and height into ratio form and estimates resized dimensions while preserving the same ratio.
Quick answer
Enter original width and height.
What this tells you
- •Enter original width and height.
- •Get simplified ratio and decimal ratio.
- •Provide target width or target height for proportional resizing.
How to Use
- 1Enter width and height.
- 2Optionally enter target width or target height.
- 3Calculate to view simplified ratio and resized dimensions.
How It Works
Formula
Simplified ratio = width/gcd(width,height) : height/gcd(width,height)The calculator uses greatest common divisor reduction and proportional scaling for resized outputs.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
1920 x 1080
Width1920
Height1080
Result16:9
Common mistakes
- Entering both target width and target height with conflicting values
- Rounding assumptions ignored in final pixel dimensions
Frequently Asked Questions
Yes. Enter target width and the matching height is calculated automatically.