Frequency & Wavelength Calculator
Choose which variable to solve for, enter the other two values, and calculate using the wave equation.
Formula
v = f × λ, where v is wave speed, f is frequency, and λ is wavelength.
Example
A 100 MHz radio wave (light in vacuum) has a wavelength of approximately 2.998 meters.
Frequently Asked Questions
- What speed does "light in vacuum" use?
- The exact defined speed of light in a vacuum, 299,792,458 m/s.
- Can I use this for sound waves?
- Yes — uncheck "light in vacuum" and enter the actual wave speed (e.g. approximately 343 m/s for sound in air at room temperature).
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