Units of measurement
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Knot (kn)
Mile per hour (mph)
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Knot (kn)
Knot (kn) is a unit of speed used in maritime and aviation navigation, equal to one nautical mile per hour (approximately 1.852 km/h).
Mile per hour (mph)
Mile per hour (mph) is a unit of speed equal to one mile traveled per hour. It is used in the United States and the United Kingdom to measure vehicle and aircraft speeds.