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.

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

Speed of Sound - Imperial Units

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

Related Topics

  • Acoustics

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

Related Documents

Search

Search is the most efficient way to navigate the Engineering ToolBox.

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

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .

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.

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

















































4.10.13

.