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Instant calculation
Enter the data and press the button to get the result.
Online Calculator
Wave speed calculator
Multiply frequency by wavelength to find the propagation speed.
Information
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Local processing
The calculation is done directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
What's the formula?
v = frequency × wavelength.
What units does it use?
Hertz and meters.
What unit returns?
Meters per second and kilometers per hour.
Is it for sound and other waves?
Yes, as long as you use the frequency and wavelength corresponding to the same medium and phenomenon.