Friis Path Loss Calculator

Enter value (enter value of frequency or wavelength) and click on calculate. Result will be displayed.

Enter your values:

InputPtx:
dB
Wavelength:
m

Or

Frequency:
MHz
Distance:
m
Gtx:
dB
Grx:
dB

Result:

Prx:
dB

Friis Free Space Formula Friis Free Space Formula is the most important antenna theory formula. It relates transmit power, antenna gain, distance, wavelength and received power. The Fries formula is used to calculate the received power from one antenna to a second antenna.
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