Aspect Ratio Calculator

Use this aspect ratio calculator to find a missing image or screen dimension from an aspect ratio. Enter one dimension and the known width to height ratio and review the matching dimension and ratio information.

Result
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Aspect ratio —
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How it works

New height = new width × (original height ÷ original width)

How to use the Aspect Ratio Calculator

Start by entering one dimension and the known width to height ratio. Keep the units consistent and check that each value belongs to the same question.

The result gives the matching dimension and ratio information. Round dimensions may slightly change the exact ratio. Use it as a guide and check any instructions, rules or professional advice that apply.

Frequently Asked Questions

What does this aspect ratio calculator calculate?
It gives the matching dimension and ratio information. Round dimensions may slightly change the exact ratio.
What information should I enter?
Enter one dimension and the known width to height ratio. Use the same units throughout so the result is easier to understand.
Why is aspect ratio useful?
It helps images and screens keep the same shape when resized.