EIRP Calculator

Pasternack's EIRP Calculator determines the radiated power given the transmitter power, the cable loss to the antenna, and the gain of the antenna.



Effective Isotropic
Radiated Power:

EIRP, or effective isotropically radiated power, or equivalent isotropically radiated power, is a measurement of output power in one direction from an ideal, one dimensional source. The ideal point-source radiates electromagnetic energy in a spherical pattern, so the "maximum" radiated power should be the same in all directions.

Prefix Symbol Value
Tera 'T' 1012
Giga 'G' 109
Mega 'M' 106
kilo 'k' 103
Prefix Symbol Value
pico 'p' 10-12
nano 'n' 10-9
micro 'u' 10-6
milli 'm' 10-3