Color and design

Aspect Ratio Calculator

Simplify width-to-height ratios or calculate a missing dimension while preserving an aspect ratio.

Calculate ratio

Simplifying requires whole-number dimensions. For a missing dimension, enter the ratio and the known dimension in the same units.

Your inputs and results are processed in your browser and are not uploaded to ToolPixels. This tool does not save them.

Keep width and height proportional

1920 by 1080 simplifies to 16:9. At a 16:9 ratio, a height of 720 gives a width of 1280. Ratios are always width first, height second.

Missing dimensions can be fractional. The result includes the nearest whole pixel; rounding can slightly change the ratio. The schematic preview scales to fit this page.