dBd to power ratio
Type a value in dBd to get it in × instantly.
3.273×
That's 1.04× as directional as a Wi-Fi router antenna, while a TV Yagi antenna is 4.8× more directional. That is 3.273× the power of an isotropic antenna in its best direction.
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 dBd to ×
dBi = dBd + 2.15; power ratio = 10^(dBi ÷ 10).
Example: 3 dBd = 3.27341 ×.
Every unit
That gain in every unit
Tables
dBd to × conversion table
| dBd | × |
|---|---|
| 0 dBd | 1.64059 × |
| 2.15 dBd | 2.69153 × |
| 3 dBd | 3.27341 × |
| 5 dBd | 5.188 × |
| 6 dBd | 6.53131 × |
| 8 dBd | 10.3514 × |
| 9 dBd | 13.0317 × |
| 10 dBd | 16.4059 × |
| 12 dBd | 26.0016 × |
| 15 dBd | 51.88 × |
| 20 dBd | 164.059 × |
| 24 dBd | 412.098 × |
| 30 dBd | 1,640.59 × |
× to dBd conversion table
| × | dBd |
|---|---|
| 1.64 × | -0.00156152 dBd |
| 2.69 × | 2.14752 dBd |
| 3.27 × | 2.99548 dBd |
| 5.19 × | 5.00167 dBd |
| 6.53 × | 5.99913 dBd |
| 10.4 × | 8.02033 dBd |
| 13 × | 8.98943 dBd |
| 16.4 × | 9.99844 dBd |
| 26 × | 11.9997 dBd |
| 51.9 × | 15.0017 dBd |
| 164 × | 19.9984 dBd |
| 412 × | 23.999 dBd |
| 1,640 × | 29.9984 dBd |
Quick answers
Quick answers
- How many × is 1 dBd?
- 1 dBd is 2.06538 ×.
- How many × is 10 dBd?
- 10 dBd is 16.4059 ×.
- How many × is 3 dBd?
- 3 dBd is 3.27341 ×.
The units
About these units
dBd (dBd)
Gain over a half-wave dipole.
Power ratio (×)
Linear power gain over isotropic.
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