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Wave Speed Calculator

Wave speed calculator

Compute wave speed from frequency and wavelength (v = f x lambda).

InputsPhysics2 fieldsLive

Result

100 m/s

Uses v = f x lambda.

Live update

Physics signal

Advanced options
Formula
v = f x lambda

Symbol legend

Symbol Meaning Unit Copy
v Wave speed m/s
f Frequency Hz
\lambda Wavelength m
  • Enter frequency in hertz.
  • Enter wavelength in meters.
  • Multiply frequency by wavelength to get speed.
Example

Worked example: f = 50 Hz and lambda = 2 m

  1. 1 f = 50
  2. 2 lambda = 2
  3. 3 v = f x lambda = 50 x 2 = 100

Wave speed is 100 m/s.

How
  1. Enter wave frequency in hertz.
  2. Enter wavelength in meters.
  3. Read wave speed result in meters per second.
Avoid
  • Using centimeters for wavelength without converting to meters.
  • Confusing angular frequency with ordinary frequency.
  • Entering zero frequency or zero wavelength.
Checks

Best fit

Wave Speed Calculator is built for calculate wave propagation speed from frequency and wavelength using v = f x lambda. If Wave Speed Calculator does not match the input scope, compare the answer with a second method.

Input check

Check v before calculating: it means wave speed and is measured in m/s.

Sanity check

For Wave Speed Calculator, use the worked example as a quick benchmark: Wave speed is 100 m/s. If the wave speed calculator answer is far away, check whether an input, unit, or mode changed.

Before copying

Review this common issue first: using centimeters for wavelength without converting to meters.

FAQ
Can this be used for electromagnetic waves?

Yes, as long as consistent units are used for frequency and wavelength.

What happens if frequency doubles?

At fixed wavelength, wave speed doubles in this relation.

Can wavelength be in nanometers?

Yes, convert to meters before interpreting SI speed output.

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