Speed of Sound to Kilometers per Hour Converter

1,234.8 kilometers per hour

1 Mach = 1,234.8 kilometers per hour at sea level (20°C)

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Understanding Speed of Sound

What is Mach Speed?

Mach speed is a measurement relative to the speed of sound. Mach 1 represents the speed of sound, approximately 1,234.8 km/h at sea level and 20°C.

Factors Affecting Sound Speed

The speed of sound varies with:

  • Temperature
  • Altitude
  • Humidity
  • Medium (air, water, etc.)