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Aspect ratio calculator
Detect the ratio of any dimensions, scale to a new size, or fit within a bounding box.
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Detect ratio
Width → height
Height → width
Fit within box
Width (px)
Height (px)
Calculate
Related tools
IP / CIDR calculator
Calculate network address, broadcast, host range, subnet mask, wildcard, and IP class from any CIDR block.
Duration calculator
Convert durations between units or add/subtract two durations. Accepts natural language, HH:MM:SS, and ISO 8601 formats.