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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

 

 


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