Enter the distance (wavelength) and frequency into the calculator to determine the missing variable. This calculator can also convert frequency to distance.

Distance To RF Calculator

Enter either value to calculate the missing variable



Distance To RF Formula

The following formula relates the distance (wavelength) in meters to the RF frequency in hertz.

f = c / d

Variables:

  • f is the frequency in hertz (Hz)
  • d is the distance (wavelength) in meters (m)
  • c is the speed of light in a vacuum (≈3 × 108 m/s)

To calculate the frequency, divide the speed of light by the distance. To calculate the distance, divide the speed of light by the frequency.

What is Distance To RF?

Distance in the context of RF signals refers to the wavelength, which is the length of one complete cycle of the electromagnetic wave. RF frequency refers to how many cycles occur each second, measured in hertz (Hz). These two properties are inversely related through the constant speed of light.

How to Calculate Distance To RF?

Follow these steps to calculate the RF frequency or wavelength using the formula f = c / d or d = c / f.

  1. Determine the distance (wavelength) in meters (d) or the frequency in hertz (f).
  2. Convert the known value to its base unit: meters for distance, hertz for frequency.
  3. Use the formula f = c / d to find frequency or d = c / f to find distance.
  4. Use c = 299,792,458 m/s for the speed of light.
  5. Compute the result and convert it into the desired unit.

Example Problem:

distance (d) = 0.5 m

speed of light (c) = 3 × 108 m/s

frequency (f) = c / d = (3 × 108) / 0.5 = 6 × 108 Hz = 600 MHz