Enter the wavelength (m) and the diameter (m) into the Calculator. The calculator will evaluate the Beamwidth.

## Beamwidth Formula

BW = 70*WL/D

Variables:

• BW is the Beamwidth (m)
• WL is the wavelength (m)
• D is the diameter (m)

To calculate Beamwidth, divide the wavelength by the diameter, then multiply by 70.

## How to Calculate Beamwidth?

The following steps outline how to calculate the Beamwidth.

• First, determine the wavelength (m).
• Next, determine the diameter (m).
• Next, gather the formula from above = BW = 70*WL/D.
• Finally, calculate the Beamwidth.
• After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

wavelength (m) = 1238

diameter (m) = 512