Speed Converter
Convert between various units of speed including km/h, mph, and Mach.
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Convert between various units of speed including km/h, mph, and Mach.
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Speed is defined as the magnitude of velocity. Common units like Kilometers per Hour (km/h) are used globally, while Miles per Hour (mph) is standard in the US and UK.
Mach 1 is the speed of sound. Traveling at Mach 2 means you are moving at twice the speed of sound. This is approximately 1,234.8 km/h at sea level and 20°C.