Aspect Ratio Calculator

Select a desired aspect ratio (e.g., 4:3 or 16:9), input the width or height, and quickly calculate the corresponding parameter.

Calculate Width or Height Based on Aspect Ratio

Result

What Is Aspect Ratio?

Aspect ratio defines the proportional relationship between width and height, typically used to specify the shape of images, videos, or screens. For instance, a 4:3 ratio indicates that the width is 4/3 of the height. By selecting an aspect ratio and providing either the width or height, you can calculate the other dimension using proportionality.

How to Calculate Width or Height?

If the aspect ratio is \( W:H \), and either the width \( w \) or height \( h \) is known, the missing parameter can be calculated as follows:

If the width \( w \) is known: \( h = \frac{w \times H}{W} \).
If the height \( h \) is known: \( w = \frac{h \times W}{H} \).

Examples

Example 1: Given Aspect ratio 16:9, width \( w = 1920 \). Find the Height \( h \)

Solution:

\( h = \frac{1920 \times 9}{16} = 1080 \)

Result: Height \( h = 1080 \).

Example 1: Given Aspect ratio 4:3, height \( h = 900 \) . Find the Width \( w \)

Solution:

\( w = \frac{900 \times 4}{3} = 1200 \)

Result: Width \( w = 1200 \).