Aspect Ratio Calculator
Calculate matching dimensions and identify any aspect ratio.
Quick answer: Aspect ratio is width divided by height, reduced to its simplest form - 1920x1080 is 16:9. To resize without distortion, multiply both dimensions by the same factor; the calculator below fills in the matching dimension automatically.
Keep proportions intact when resizing: enter your original dimensions and any one new dimension, and the calculator fills in the other. It also simplifies any width × height into its cleanest ratio (like 16:9 or 4:3).
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How it works
- Enter the original width and height.
- Enter either the new width or the new height.
- Read the matching dimension and the simplified ratio.
Frequently asked questions
Why does aspect ratio matter for logos and patches?
Stretching a design to fit a space distorts text and shapes instantly — viewers notice even 5% distortion. Scale proportionally and crop or pad instead, or have the artwork properly recomposed for the new shape.