Scroll down for calculator and instructions.
If you need a calculator for light waves (electromagnetic waves), click here.

Sound waves travel about one million times more slowly than light waves but their frequency and wavelength formulas are somewhat similar to light wave formulas.

the Greek letter lambda λ is the symbol for wavelength.

As usual, here’s a calculator to make the work a little easier for you.

First, select the speed of sound. Five of the most common speeds are ready to choose by clicking and once chosen, the value in meters per second will be displayed in the box on the right. However, if you require another speed (for example the speed of sound in air at 15°C), then click on the sixth box (labeled “other”) and enter 340.3.

meters/sec
Now click on one of these boxes
---- W a v e l e n g t h ----
----- F r e q u e n c y -----
The box below is NOT for input.
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For easy readability, the answers are displayed in a “significant figure” format so you will not see answers such as 77.3333333333333333.
Numbers larger than 1,000 and smaller than .001 will be displayed in scientific notation and with the same number of significant figures specified. You may change the significant figures displayed by changing the number in the box above.
Most browsers, will display the answers properly but there are a few browsers that will show no output whatsoever. If so, enter a zero in the box above. This eliminates all formatting but it is better than seeing no output at all.