Antenna Gain
Calculate Antenna Gain instantly with the exact formula and a worked example.
Antenna Gain
Efficiency η
Directivity D
G (gain)
70
G
70
G, dBi
18,45
More about: Antenna Gain
What it calculates
The “Antenna Gain” calculator computes G (gain) from 2 parameters: efficiency η, directivity d.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Efficiency η = 0.7, Directivity D = 100 the result is 70 (G = η·D).
How to use
- Enter efficiency η and directivity d — each field above is adjustable with a slider.
- G (gain) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Antenna Gain calculated?
The Antenna Gain calculator computes G (gain) from efficiency η, directivity d. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Antenna Gain calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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