# Convert Mach to Knots

Enter the Mach number below to convert the speed to knots.

**Results in Knots:**

## How to Convert Mach to Knots

To convert a Mach measurement to a knot measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 666.738661 knots, so use this simple formula to convert:

The speed in knots is equal to the Mach number multiplied by 666.738661.

**For example,**here's how to convert Mach 2 to knots using the formula above.

Mach and knots are both units used to measure speed. Keep reading to learn more about each unit of measure.

## Mach

Mach, sometimes also referred to as a Mach number, is the ratio of the speed of an object to the speed of sound.

Mach can be abbreviated as M, and is also sometimes abbreviated as Ma. For example, Mach 1 can be written as 1 M or 1 Ma.

Although Mach can be abbreviated *M* or *Ma*, the Mach number is typically expressed with the number after the unit name.
For example, the expression *Mach 3* is preferred rather than *3 Machs* or *3 M*.

The speed is classified as either subsonic, transonic, supersonic, or hypersonic depending on the Mach number.

Speed Classification | Mach Number |
---|---|

Subsonic | Mach < 1.0 |

Transonic | Mach = 1.0 |

Supersonic | Mach > 1.0 |

Hypersonic | Mach > 5.0 |

## Knots

One knot is equal to a speed of one nautical mile per hour, or one minute of latitude per hour.

Knots can be abbreviated as *kn*, and are also sometimes abbreviated as *kt*. For example, 1 knot can be written as 1 kn or 1 kt.

## Mach Measurements and Equivalent Knot Conversions

Mach | Knots |
---|---|

Mach 1 | 666.74 kn |

Mach 2 | 1,333 kn |

Mach 3 | 2,000 kn |

Mach 4 | 2,667 kn |

Mach 5 | 3,334 kn |

Mach 6 | 4,000 kn |

Mach 7 | 4,667 kn |

Mach 8 | 5,334 kn |

Mach 9 | 6,001 kn |

Mach 10 | 6,667 kn |

Mach 11 | 7,334 kn |

Mach 12 | 8,001 kn |

Mach 13 | 8,668 kn |

Mach 14 | 9,334 kn |

Mach 15 | 10,001 kn |

Mach 16 | 10,668 kn |

Mach 17 | 11,335 kn |

Mach 18 | 12,001 kn |

Mach 19 | 12,668 kn |

Mach 20 | 13,335 kn |

Mach 21 | 14,002 kn |

Mach 22 | 14,668 kn |

Mach 23 | 15,335 kn |

Mach 24 | 16,002 kn |

Mach 25 | 16,668 kn |

Mach 26 | 17,335 kn |

Mach 27 | 18,002 kn |

Mach 28 | 18,669 kn |

Mach 29 | 19,335 kn |

Mach 30 | 20,002 kn |

Mach 31 | 20,669 kn |

Mach 32 | 21,336 kn |

Mach 33 | 22,002 kn |

Mach 34 | 22,669 kn |

Mach 35 | 23,336 kn |

Mach 36 | 24,003 kn |

Mach 37 | 24,669 kn |

Mach 38 | 25,336 kn |

Mach 39 | 26,003 kn |

Mach 40 | 26,670 kn |

## More Mach Speed Conversions

- Convert to Speed Of Sound
- Mach 1 is equal to 1 speed of sound
- Convert to Speed Of Light
- Mach 1 is equal to 1.1441E-6 speed of light
- Convert to Miles Per Hour
- Mach 1 is equal to 767.269148 miles per hour
- Convert to Feet Per Second
- Mach 1 is equal to 1,125.33 feet per second
- Convert to Kilometers Per Second
- Mach 1 is equal to 0.343 kilometers per second
- Convert to Kilometers Per Hour
- Mach 1 is equal to 1,234.8 kilometers per hour
- Convert to Meters Per Second
- Mach 1 is equal to 343 meters per second
- Convert to Centimeters Per Second
- Mach 1 is equal to 34,300 centimeters per second