Math

Aspect Ratio Calculator

Aspect ratio calculator: enter a ratio like 16:9 and one dimension to compute the matching size for screens and images.

Ratio width (e.g. 16)

Ratio height (e.g. 9)

Known width (leave other blank)

Known height

Calculate

Find the missing width or height from an aspect ratio and one dimension.

Frequently asked questions

Is it free?

Yes, completely free and unlimited.