How to use this calculator
Reduce pixel dimensions to an integer ratio. Enter width (pixels), height (pixels). The result updates when you change an input. To compare two sets of inputs, save scenario A, then enter the second set; the result panel shows the difference.
Formula and limits
Reduced ratio = width/GCD : height/GCD. Requires positive whole-pixel dimensions.
Worked example
The following example uses the calculator’s starting values. It is an illustration of the method, not a recommended target.
| Input | Example value |
|---|---|
| Width (pixels) | 1920 |
| Height (pixels) | 1080 |
Width-to-height ratio: 1.778
16:9
Interpreting your result
Check the units and assumptions before using the result. These tools simplify real-world conditions such as transfer overhead and variations in reading speed.
Comparing alternatives
Save the first result as scenario A, then change one input. The comparison shows the numeric difference; it does not label either result as better. Choose inputs that describe realistic alternatives. Values shown on screen are rounded, so calculations from rounded intermediate results may differ slightly.