Convert Knot to Mach

One kn equals 0.00149983803 Ma. This converter allows you to easily convert between Knot and Mach in real time.

Formula

kn × 0.00149983803 = Ma

Example: 1 kn = 0.00149983803 Ma

What is Knot?

The knot is a unit of speed equal to one nautical mile (1,852 meters) per hour. It is the standard unit for maritime and aviation speed worldwide. Ship speeds, aircraft airspeeds, and wind speeds in marine forecasts are all commonly expressed in knots. The name comes from the historical practice of measuring a ship's speed by counting knots on a rope paid out over a fixed time. One knot equals approximately 0.5144 m/s.

What is Mach?

The Mach number is the ratio of an object's speed to the speed of sound. Named after physicist Ernst Mach, Mach 1 equals the speed of sound, approximately 340 m/s in standard atmosphere. It is primarily used in aerospace: the Concorde cruised at Mach 2.04, and modern fighter jets are rated by their maximum Mach number. Exceeding Mach 1 produces a sonic boom. For conversion purposes, this tool uses the standard atmosphere speed of sound at sea level (15 degrees Celsius), which is 343 m/s.