Mach (Ma) to Knots (kn) Conversion
Mach
The Mach number represents the ratio of an object's speed to the local speed of sound. Mach 1 is approximately 343 m/s (1,235 km/h) at sea level and 20 °C, but varies with temperature and altitude. Named after Austrian physicist Ernst Mach, the Mach number is fundamental in aerodynamics: subsonic is below Mach 0.8, supersonic from Mach 1.2 to 5, and hypersonic above Mach 5.
Knots
The knot is a unit of speed equal to exactly one nautical mile per hour (1.852 km/h), the standard unit for maritime and aerial navigation worldwide. Its name derives from the historical practice of measuring ship speed using a knotted rope thrown overboard. Because the nautical mile is tied to the Earth's geometry (one arcminute of latitude), a ship at 1 knot crosses one arcminute of latitude per hour.
| Mach (Ma) | Knots (kn) |
|---|---|
| 0.1 Ma | 66.673866090713 kn |
| 1 Ma | 666.73866090713 kn |
| 2 Ma | 1333.4773218143 kn |
| 3 Ma | 2000.2159827214 kn |
| 5 Ma | 3333.6933045356 kn |
| 10 Ma | 6667.3866090713 kn |
| 20 Ma | 13334.773218143 kn |
| 30 Ma | 20002.159827214 kn |
| 50 Ma | 33336.933045356 kn |
| 100 Ma | 66673.866090713 kn |
| 1000 Ma | 666738.66090713 kn |