dBi to power ratio
Type a value in dBi to get it in × instantly.
1.995×
That's 1.22× as directional as a half-wave dipole, while a Wi-Fi router antenna is 1.58× more directional. That is 1.995× the power of an isotropic antenna in its best direction.
Convert the other way: × to dBi
What it means
How much gain is that?
Peak gain in the main direction. Gain does not add power: it concentrates it, at the cost of other directions.
The math
How to convert dBi to ×
dBi = dBd + 2.15; power ratio = 10^(dBi ÷ 10).
Example: 3 dBi = 1.99526 ×.
Every unit
That gain in every unit
Tables
dBi to × conversion table
| dBi | × |
|---|---|
| 0 dBi | 1 × |
| 2.15 dBi | 1.64059 × |
| 3 dBi | 1.99526 × |
| 5 dBi | 3.16228 × |
| 6 dBi | 3.98107 × |
| 8 dBi | 6.30957 × |
| 9 dBi | 7.94328 × |
| 10 dBi | 10 × |
| 12 dBi | 15.8489 × |
| 15 dBi | 31.6228 × |
| 20 dBi | 100 × |
| 24 dBi | 251.189 × |
| 30 dBi | 1,000 × |
× to dBi conversion table
| × | dBi |
|---|---|
| 1.64 × | 2.14844 dBi |
| 2.69 × | 4.29752 dBi |
| 3.27 × | 5.14548 dBi |
| 5.19 × | 7.15167 dBi |
| 6.53 × | 8.14913 dBi |
| 10.4 × | 10.1703 dBi |
| 13 × | 11.1394 dBi |
| 16.4 × | 12.1484 dBi |
| 26 × | 14.1497 dBi |
| 51.9 × | 17.1517 dBi |
| 164 × | 22.1484 dBi |
| 412 × | 26.149 dBi |
| 1,640 × | 32.1484 dBi |
Quick answers
Quick answers
- How many × is 1 dBi?
- 1 dBi is 1.25893 ×.
- How many × is 10 dBi?
- 10 dBi is 10 ×.
- How many × is 3 dBi?
- 3 dBi is 1.99526 ×.
The units
About these units
dBi (dBi)
Gain over an isotropic radiator.
Power ratio (×)
Linear power gain over isotropic.
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