# Convert Speed Of Light to Mach Number

Enter the speed in speed of light below to get the value converted to Mach number.

**Results in Mach Number:**

## How to Convert Speed Of Light to Mach Number

To convert a speed of light measurement to a Mach measurement, multiply the speed by the conversion ratio. One speed of light is equal to Mach 874,030.489796, so use this simple formula to convert:

The Mach number is equal to the speed in speed of light multiplied by 874,030.489796.

**For example,**here's how to convert 5 speed of light to Mach number using the formula above.

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

## Speed Of Light

The speed of light is equal to exactly 299,792,458 meters per second, or 670,616,629 miles per hour.

Speed of light can be abbreviated as *c*, for example 1 speed of light can be written as 1 c.

## Mach Number

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 |

## Speed Of Light Measurements and Equivalent Mach Conversions

Speed Of Light | Mach Number |
---|---|

1 c | Mach 874,030 |

2 c | Mach 1,748,061 |

3 c | Mach 2,622,091 |

4 c | Mach 3,496,122 |

5 c | Mach 4,370,152 |

6 c | Mach 5,244,183 |

7 c | Mach 6,118,213 |

8 c | Mach 6,992,244 |

9 c | Mach 7,866,274 |

10 c | Mach 8,740,305 |

11 c | Mach 9,614,335 |

12 c | Mach 10,488,366 |

13 c | Mach 11,362,396 |

14 c | Mach 12,236,427 |

15 c | Mach 13,110,457 |

16 c | Mach 13,984,488 |

17 c | Mach 14,858,518 |

18 c | Mach 15,732,549 |

19 c | Mach 16,606,579 |

20 c | Mach 17,480,610 |

21 c | Mach 18,354,640 |

22 c | Mach 19,228,671 |

23 c | Mach 20,102,701 |

24 c | Mach 20,976,732 |

25 c | Mach 21,850,762 |

26 c | Mach 22,724,793 |

27 c | Mach 23,598,823 |

28 c | Mach 24,472,854 |

29 c | Mach 25,346,884 |

30 c | Mach 26,220,915 |

31 c | Mach 27,094,945 |

32 c | Mach 27,968,976 |

33 c | Mach 28,843,006 |

34 c | Mach 29,717,037 |

35 c | Mach 30,591,067 |

36 c | Mach 31,465,098 |

37 c | Mach 32,339,128 |

38 c | Mach 33,213,159 |

39 c | Mach 34,087,189 |

40 c | Mach 34,961,220 |

## More Speed Of Light Speed Conversions

- Convert to Knots
- 1 c is equal to 582,749,918.4 knots
- Convert to Speed Of Sound
- 1 c is equal to 874,030.5 speed of sound
- Convert to Miles Per Hour
- 1 c is equal to 670,616,629.4 miles per hour
- Convert to Feet Per Second
- 1 c is equal to 983,571,056.4 feet per second
- Convert to Kilometers Per Second
- 1 c is equal to 299,792.5 kilometers per second
- Convert to Kilometers Per Hour
- 1 c is equal to 1,079,252,848.8 kilometers per hour
- Convert to Meters Per Second
- 1 c is equal to 299,792,458 meters per second
- Convert to Centimeters Per Second
- 1 c is equal to 29,979,245,800 centimeters per second