| Table of decibel values for power, voltage and current |
Table of decibel values
- Decibels against Power and Voltage or Current Ratios.
The decibel is widely used in radio and electronics design
calculations. When undertaking electronics or RF design and development it is
often necessary to compare the value of two parameters. It is then possible to
alter the electronics design to match the requirements. As values in electronics
circuits may vary quite widely, it is often convenient to use a logarithmic
scale such as the decibel (dB).
| Decibels (dB) |
Power Ratio |
Current or Voltage Ratio |
| 0.1 |
1.023 |
1.012 |
| 0.2 |
1.047 |
1.023 |
| 0.3 |
1.072 |
1.035 |
| 0.4 |
1.096 |
1.047 |
| 0.5 |
1.122 |
1.059 |
| 0.6 |
1.148 |
1.072 |
| 0.7 |
1.175 |
1.084 |
| 0.8 |
1.202 |
1.096 |
| 0.9 |
1.230 |
1.109 |
| 1.0 |
1.259 |
1.122 |
| 2.0 |
1.585 |
1.259 |
| 3.0 |
1.995 |
1.413 |
| 4.0 |
2.512 |
1.585 |
| 5.0 |
3.162 |
1.778 |
| 6.0 |
3.981 |
1.995 |
| 7.0 |
5.012 |
2.239 |
| 8.0 |
6.310 |
2.512 |
| 9.0 |
7.943 |
2.818 |
| 10 |
10.0 |
3.162 |
| 20 |
102 |
10.0 |
| 30 |
103 |
31.62 |
| 40 |
102 |
100.0 |
| 50 |
105 |
316.2 |
| 60 |
106 |
1000.0 |
| 70 |
107 |
3162.3 |
| 80 |
108 |
10000 |
| 90 |
109 |
31623 |
| 10 |
1010 |
100000 |
|
