# How to Calculate the Wavelength of a Water Wave

Save

To calculate a water wave's wavelength, you need a number of values, including an estimate of the wavelength itself. Calculating therefore requires numerous iterations, which computer programs can manage far more easily than humans. But a slightly simpler formula exists. It determines the wavelength from the wave's period and height.

• Multiply pi by two.

π * 2

= 6.2831

• Divide your answer by the wave's period. If it has a period of 5;

6.2831 / 5

=1.26

1.26 * 1.26

= 1.58

• Multiply your answer by the wave's height, in meters. If the wave is 2 m high:

1.58 * 2

= 3.16

3.16 / 9.81

= 0.322

0.322 ^ 0.75

= 0.428

tanh (0.428)

= 0.403

• ### Other People Are Reading

0.403 ^ 0.66

= 0.549

• Square the wave's period.

5 * 5

= 25

25 * 9.81

= 245.25

245.25 / 6.2831

= 39

• Multiply your answer by the answer to step 8 to determine the wave's wavelength in meters.

39 * 0.549

= 29.4 meters

## References

• Photo Credit D-BASE/Photodisc/Getty Images
Promoted By Zergnet

## Related Searches

Check It Out

### 3 Day-to-Night Outfits for the Work Week

M
Is DIY in your DNA? Become part of our maker community.