Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 17, 2023

Mach Number Calculator is a free online tool for calculating Mach numbers. The Mach number calculator tool speeds up the process by displaying the Mach number in the surrounding media in a fraction of a second.

Choose a Calculation
Object Speed(v)
Speed of Sound(a)

### What is Mach Number? | Formula for Mach Number

Sound travels at various rates in various mediums and at various temperatures. That speed is compared to an object's speed. The Mach number is defined as the ratio of an object's speed to the speed of sound. The Mach number is a quantity that has no dimensions. The Mach number equation can be written as follows: M = v / c,

• Where, v is the objects speed
• c is the sound's speed.

For more concepts check out physicscalculatorpro.com to get quick answers by using this free tool.

### How do you Calculate Mach Number?

Follow the steps below to calculate Mach Number:

• From the list on the right, select the appropriate units for speed. You can also use our speed converter if you need assistance with converting.
• Enter the object speed and sound speed.
• The Mach number calculator will now display the Mach number for the specified object.

### Speeds of Subsonic and Supersonic

Mach number range Type of flow Type of objects Common examples
0.8 Subsonic Passenger aircraft and Helicopters Dornier 228, Boeing 747-400, Airbus A330-300
0.8-1.2 Transonic Military trainers M346 Master, T45 Goshawk, B-1B Lancer
1.2-5.0 Supersonic Military aircraft MiG 21 Fishbed, F 16 Fighting Falcon, Mirage 2000H
5.0-10.0 Hypersonic Ballistic missiles, experimental vehicles Bramhos-II, NASA X15

### Mach Number Calculation Example

Question 1: Calculate the Mach number for a plane travelling at 1300 km/h. Given a sound speed of 233 m/s.

Solution:

Consider the problem, we have

Travelling speed 1300 km/h

Sound speed of 233 m/s

The Mach number equation can be written as follows: M = v / c.

M = 361.11 / 233

M = 1.55

Therefore, The Mach number is 1.55

### FAQs on Mach Number Calculator

1. What is Mach number?

The Mach number is defined as the ratio of an object's speed to the speed of sound. The Mach number is a quantity that has no dimensions.

2. What is the equation of Mach number?

The Mach number equation can be written as follows: M = v/c

Where,

• v is the objects speed
• c is the sounds speed

3. What is the formula for calculating Mach Speed?

The ratio of the vehicles velocity (V) divided by the speed of sound at that altitude (a) is the Mach number (M).