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IP / CIDR calculator
Calculate network address, broadcast, host range, subnet mask, and more from any CIDR notation.
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CIDR notation
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Aspect ratio calculator
Detect the simplified ratio of any dimensions, scale to a new size, or fit within a bounding box without upscaling.
Duration calculator
Convert durations between units or add/subtract two durations. Accepts natural language, HH:MM:SS, and ISO 8601 formats.