aspect ratio calculator
find the aspect ratio of a width and height, and calculate new dimensions that keep the same ratio.
runs on your device · free · no sign-up
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frequently asked questions
how is aspect ratio calculated?
divide width and height by their greatest common divisor. 1920×1080 becomes 16:9.
how do i resize without distortion?
enter the new width (or height) and the other side is calculated: new height = new width × height ÷ width.
what are common ratios?
16:9 for video and monitors, 4:3 for older screens, 1:1 for square posts and 9:16 for vertical video.