Meters Per Second to Mach Number Conversion

Enter the speed in meters per second below to get the value converted to Mach number.

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1 m/s = Mach 0.002915

How to Convert Meters Per Second to Mach Number

Speedometers are used in vehicles to measure speed

To convert a meter per second measurement to a Mach measurement, multiply the speed by the conversion ratio. One meter per second is equal to Mach 0.002915, so use this simple formula to convert:

Mach number = meters per second × 0.002915

The Mach number is equal to the speed in meters per second multiplied by 0.002915.

For example, here's how to convert 5 meters per second to Mach number using the formula above.
5 m/s = (5 × 0.002915) = Mach 0.014577

Meters per second and Mach number are both units used to measure speed. Keep reading to learn more about each unit of measure.

Meters Per Second

Meters per second are a measurement of speed expressing the distance travelled in meters in one second.

The meter per second, or metre per second, is the SI derived unit for speed in the metric system. Meters per second can be abbreviated as m/s, and are also sometimes abbreviated as m/sec. For example, 1 meter per second can be written as 1 m/s or 1 m/sec.

In formal expressions, the slash, or solidus (/), is used to separate units used to indicate division in an expression.[1]

Meters per second can be expressed using the formula:
vm/s = dmtsec

The velocity in meters per second is equal to the distance in meters divided by time in seconds.

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.[2]

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 classifications for various mach numbers.
Speed Classification Mach Number
Subsonic Mach < 1.0
Transonic Mach = 1.0
Supersonic Mach > 1.0
Hypersonic Mach > 5.0

Meter Per Second to Mach Conversion Table

Mach numbers converted to Mach number
Meters Per Second Mach Number
85.75 m/s Mach 0.25
171.5 m/s Mach 0.5
257.25 m/s Mach 0.75
343 m/s Mach 1
514.5 m/s Mach 1.5
686 m/s Mach 2
857.5 m/s Mach 2.5
1,029 m/s Mach 3
1,201 m/s Mach 3.5
1,372 m/s Mach 4
1,544 m/s Mach 4.5
1,715 m/s Mach 5
1,887 m/s Mach 5.5
2,058 m/s Mach 6
2,230 m/s Mach 6.5
2,401 m/s Mach 7
2,573 m/s Mach 7.5
2,744 m/s Mach 8
2,916 m/s Mach 8.5
3,087 m/s Mach 9
3,259 m/s Mach 9.5
3,430 m/s Mach 10


  1. National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units,
  2. NASA, Mach Number,