This tool computes the Antenna Gain using:

- Antenna Factor (units: dB/m)
- Frequency of operation (units: Hz/kHz/MHz/GHz)

## Antenna Gain Formula

**Gain (dBi) = 20*Log _{10}(9.73/(λ***

**(10)**

^{AF/20}))Where

**λ**= Wavelength =**c/f**, where**c**is the speed of light and**f**is the frequency**AF**= Antenna Factor

## Definitions

**Antenna Factor**

It is the ratio of the electric field **E** (units: V/m or μV/m) to the voltage **V** (units: V or μV) induced across the terminals of an antenna.

The units are dB-per-meter or **dB/m**.

**Related Calculators**

**References**

[1] Antenna Factor on Wikipedia