Technology & Computing
Antenna Gain to EIRP Calculator
Calculate effective isotropic radiated power (EIRP) from transmitter power, cable loss, and antenna gain.
Your inputs
Change any value to update the result instantly.
EIRP
24 dBm
EIRP
0.2512 W
EIRP
251.1886 mW
Net gain after cable loss
4 dB
Many regulators cap maximum permitted EIRP for unlicensed bands — check local limits (e.g. FCC/ETSI) before transmitting.
Formula and working
EIRP (dBm) = Tx power (dBm) − cable/connector loss (dB) + antenna gain (dBi)
- 1
Collect the inputs
Transmitter output power = 20 dBm; Cable & connector loss = 2 dB; Antenna gain = 6 dBi
- 2
Apply the formula
EIRP (dBm) = Tx power (dBm) − cable/connector loss (dB) + antenna gain (dBi)
- 3
Result
EIRP = 24 dBm
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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