Speed Converter Tool

Speed Conversion

Speed is the distance traveled per unit of time. It is how fast an object is moving. Velocity is the same as speed but also includes direction.

Speed Units Explained

  • Meters per Second (m/s): The SI unit of speed and velocity.
  • Kilometers per Hour (km/h): The most common unit of speed for road traffic, used in most of the world.
  • Miles per Hour (mph): The standard unit of speed for road traffic in the US and UK.
  • Knot (kn): A unit of speed equal to one nautical mile per hour. Used in meteorology, maritime, and air navigation.
  • Mach: The ratio of the speed of a body to the speed of sound in the surrounding medium. Mach 1 is the speed of sound.

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Fun Fact: The speed of sound (Mach 1) isn’t constant! It changes with temperature. At 20°C (68°F) at sea level, it’s about 343 m/s (1,235 km/h or 767 mph).