Please send us feedback or an email if you have suggestions on how to improve this site for your use or if you would like to see more conversions calculator included. You can use the “reset” button to reset the process. The converted result will be shown in the other fields. Click on any empty space in the window or on the “calculate” button. Type the value of the speed of the object or its Mach number into the field behind which you find the correct unit. You can use the “reset” button to reset the process.Īfter the calculation of the speed of sound you may calculate the Mach number of a moving object or its speed, if the Mach number is known. Next, input either the temperature or the speed of sound into the field behind which you find the correct unit. Alternatively, you may choose “?” sign and type your own values for the molar mass and γ of the gas given. The gases molar mass and the adiabatic constant of the gases are already given. The Mach number is defined as the ratio of the speed of an object moving in a gas to the speed of sound of the gas.įirst choose the gas in the corresponding pull-down-menu for which you want to calculate the speed of sound. The indicated values for γ are valid in the range of room temperature and the calculation is valid only for conditions, under which the medium may be considered as an ideal gas. The speed of sound in dry air at 20 ☌ = 343 m / s. M = the molecular weight of the gas in kg/mol R = the universal gas constant = 8.314 J/mol K, the adiabatic constant, characteristic of the specific gas) Γ = cP/cV is the ratio of the heat capacities (i.e. The speed of sound in an ideal gas is given by the relationship The speed of sound V sound in a gas depends on the kind of gas and on the temperature.
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