Table of decibel values

- a table or chart of 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 10^2 10.0
30 10^3 31.62
40 10^4 100.0
50 10^5 316.2
60 10^6 1000.0
70 10^7 3162.3
80 10^8 10000
90 10^9 31623
100 10^10 100000


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