Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Speed of Sound - Online Calculator

A free online speed of sound calculator.

Sponsored Links

The speed of sound in air (or in other gases) can be expressed as

c = (k p / ρ)1/2

    = (k R T)1/2                      (1)

where

c = speed of sound (m/s, ft/s)

k = ratio of specific heats (adiabatic index, isentropic expansion factor)

p = pressure (Pa, psi)

R = 286.9 (J/kg K) = 1,716 (ft lb/slug oR) = individual gas constant specific for air

T = absolute temperature (K, R)

The calculators below can be used to estimate the speed of sound in air at temperatures close to 273.15 K (0oC, 32oF).

Speed of Sound - SI Units

k - ratio of specific heats

R - individual gas constant (J/kg K)

T - absolute temperature (K)

Speed of Sound - Imperial Units

k - ratio of specific heats

R - individual gas constant (ft lb/slug oR)

T - absolute temperature (R)

Example - Speed of Sound in Air

The individual gas constant for air is 286.9 J/kgK and the ratio of specific heat is 1.4. The speed of sound at 0 oC (273.15 K) can be calculated as

c = (1.4 (286.9 J/kgK) (273.15 K))1/2

   = 331.2 m/s

Speed of sound in dry air

Sponsored Links

Related Topics

  • Acoustics

    Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

Citation

This page can be cited as

  • The Engineering ToolBox (2003). Speed of Sound - Online Calculator. [online] Available at: https://www.engineeringtoolbox.com/speed-sound-d_519.html [Accessed Day Month Year].

Modify the access date according your visit.

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































9.19.12

Sponsored Links
.