# Frequency vs. Wavelength

Frequency and wavelength are related and inversely proportional. Calculating one from the other is trivial.

The mathematical equation is: $$\lambda =\frac{c}{f}$$

However, in radio, the equation is usually simplified by converting the frequency from hertz to megahertz, and replacing the speed of light with a proportionately smaller number: $$\lambda \approx \frac{300}{f\text{[inMHz]}}$$