Wave speed calculator

Wave speed = frequency × wavelength.

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Frequency (Hz)

Wavelength (m)

Answer

…

Wave speed = frequency × wavelength.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Enter wavelength and frequency for the same wave and medium. No speed of light or sound is assumed.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

Scratch calculator

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Keyboard shortcuts

Updated 2026-09-26

Using Wave speed calculator

Wave speed = frequency × wavelength.

Enter wavelength and frequency for the same wave and medium. No speed of light or sound is assumed.

Next: Wavelength calculator

A worked example

With frequency (hz) = 50, wavelength (m) = 2, the wave speed (m/s) is 100.

Next: Frequency calculator

Before you use the result

Enter wavelength and frequency for the same wave and medium. No speed of light or sound is assumed.

Example results for frequency (hz)

These examples use Wavelength (m): 2. They are reference calculations, not recommended settings.

Frequency (Hz)	Wave speed (m/s)
25	50
50	100
100	200

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ToolOctopus. “Wave speed calculator.” Updated 2026-09-26. https://tooloctopus.com/wave-speed-calculator.

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