Mach Number Formula

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Mach Number is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound. Check FAQs
M=Vba
M - Mach Number?Vb - Speed of Object?a - Speed of Sound?

Mach Number Example

With values
With units
Only example

Here is how the Mach Number equation looks like with Values.

Here is how the Mach Number equation looks like with Units.

Here is how the Mach Number equation looks like.

2.0408Edit=700Edit343Edit
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Mach Number Solution

Follow our step by step solution on how to calculate Mach Number?

FIRST Step Consider the formula
M=Vba
Next Step Substitute values of Variables
M=700m/s343m/s
Next Step Prepare to Evaluate
M=700343
Next Step Evaluate
M=2.04081632653061
LAST Step Rounding Answer
M=2.0408

Mach Number Formula Elements

Variables
Mach Number
Mach Number is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.
Symbol: M
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Speed of Object
Speed of Object is equal to the distance travelled by the body in one second.
Symbol: Vb
Measurement: SpeedUnit: m/s
Note: Value should be greater than 0.
Speed of Sound
The Speed of Sound is defined as speed of the dynamic propagation of sound waves.
Symbol: a
Measurement: SpeedUnit: m/s
Note: Value should be greater than 0.

Other formulas in Thermodynamics and Governing Equations category

​Go Speed of Sound
a=γ[R-Dry-Air]Ts
​Go Mach Angle
μ=asin(1M)
​Go Mayer's Formula
R=Cp-Cv
​Go Stagnation Temperature
T0=Ts+Ufluid22Cp

How to Evaluate Mach Number?

Mach Number evaluator uses Mach Number = Speed of Object/Speed of Sound to evaluate the Mach Number, Mach Number formula is defined as the ratio of the speed of an object to the speed of sound in the surrounding medium. It is a crucial parameter in aerospace engineering, particularly in analyzing supersonic and subsonic flight conditions. Mach Number is denoted by M symbol.

How to evaluate Mach Number using this online evaluator? To use this online evaluator for Mach Number, enter Speed of Object (Vb) & Speed of Sound (a) and hit the calculate button.

FAQs on Mach Number

What is the formula to find Mach Number?
The formula of Mach Number is expressed as Mach Number = Speed of Object/Speed of Sound. Here is an example- 2.040816 = 700/343.
How to calculate Mach Number?
With Speed of Object (Vb) & Speed of Sound (a) we can find Mach Number using the formula - Mach Number = Speed of Object/Speed of Sound.
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