Antenna Wavelength Calculator

This tool converts frequency to wavelength. It’s also referred to as an antenna length calculator.

arrow Wavelength to Frequency


λ = c/f

where, c is the speed of light and f is the frequency.

The wavelength can also be scaled down depending on the antenna dimension where the default scaling is 1 for a Full-Wave antenna.


The antenna is a critical component of any wireless system. It converts electrical signals from the transmitter into electromagnetic waves that can be propagated through the air. At the receiver it converts captured waves to a signal voltage that can be processed by the receiver.

The frequency of the signal determines the wavelength, and the antenna must be designed to radiate efficiently at that size.

Application Examples

Use this tool to calculate the spacing between two antennas in a diversity application. For example at 434 MHz, a minimum of ½ wavelength separation is calculated to be 34.5 cm.

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