How this calculator works
Enter the values for first value, second value and review the units before calculating.
Formula / method
Ratio = width ÷ gcd(width,height) : height ÷ gcd(width,height)
Worked example
1920×1080 reduces to the familiar 16:9 aspect ratio.
Assumptions and limitations
Dimensions are positive integer-like pixel counts.
The ratio describes shape, not image quality, crop behavior or display scaling.