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Miles per Hour
Miles per hour (mph) is the unit of speed used for vehicle speed limits and travel speeds in the US and UK.
Kilometers per Hour
Kilometers per hour (km/h) is the metric unit of speed used for vehicle speed limits and travel speeds in most countries.
Meters per Second
Meters per second (m/s) is the SI unit of speed, commonly used in physics and scientific measurements.
Knots
A knot is a unit of speed equal to one nautical mile per hour, used primarily in maritime and aviation navigation.
Feet per Second
Feet per second (ft/s) is a unit of speed used mainly in the US, common in physics, ballistics, and engineering.