# Antenna Gain Calculator English Español

The gain of an antenna (dbi) in a given direction is the amount of energy radiated in that direction compared to the energy an isotropic antenna would radiate in the same direction when driven with the same input power. Simply enter the efficiency, wave length, physical aperture area to calculate the gain or frequency of antennas.

## Gain of Antennas Calculation

 Efficiency (η) = Wave Length (λ) = Physical Aperture Area (A) =
 Antenna Gain(GdBi) =

The gain of an antenna (dbi) in a given direction is the amount of energy radiated in that direction compared to the energy an isotropic antenna would radiate in the same direction when driven with the same input power. Simply enter the efficiency, wave length, physical aperture area to calculate the gain or frequency of antennas.

Code to add this calci to your website  Formula GdBi = 10 LOG10(η 4 πA / λ2) Where,     η = Efficiency     λ = Wave Length     A = Physical Aperture Area This tool will help you dynamically to calculate the gain or frequency of antennas.