G (gain)
Calculate G (gain) instantly with the exact formula and a worked example. Free online calculator — no signup.
G (gain)
Efficiency η
Directivity D
G (gain)
70
G
70
G, dBi
18,45
More about: G (gain)
What it calculates
The “G (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 the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.