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matching new height
Simplified ratio–
Last updated 23 August 2026
The formula
New height = new width × (original height ÷ original width). Holding that ratio constant is what keeps a resized image or video from looking stretched or squashed.
Common questions
How is the missing dimension calculated?
New height = new width × (original height ÷ original width). That ratio between the original dimensions is held constant, so the image or video resizes without stretching or squashing.
What do the preset buttons do?
They fill in common standard ratios — 16:9 for widescreen video, 9:16 for vertical/story format, 1:1 for square, 4:3 for older video or print — so you don't need to know the exact pixel values.
Why does the simplified ratio matter?
It's a quick way to recognize a standard format. 1920×1080 and 1280×720 look like different numbers, but both simplify to 16:9 — the same shape at different sizes.