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

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## 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