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Miscellaneous

Decibel dB to Power & Current or Voltage Levels Chart

 Decibel dB to Power & Current or Voltage Levels Chart

The table below provides a chart of the decibel levels converted to power ratios, voltage and current ratios.

The decibel levels are chosen for a wide variety of different values to enable an easy estimate of the decibel levels in a circuit or system.

Decibel Chart / dB Levels Table
Decibels, dB LevelPower RatioCurrent or Voltage Ratio
0.11.0231.012
0.21.0471.023
0.31.0721.035
0.41.0961.047
0.51.1221.059
0.61.1481.072
0.71.1751.084
0.81.2021.096
0.91.2301.109
1.01.2591.122
2.01.5851.259
3.01.9951.413
4.02.5121.585
5.03.1621.778
6.03.9811.995
7.05.0122.239
8.06.3102.512
9.07.9432.818
1010.03.162
2010^210.0
3010^331.62
4010^4100.0
5010^5316.2
6010^61000.0
7010^73162.3
8010^810000
9010^931623
10010^10100000

This table of the different decibel levels related to different power and voltage or current ratios can be useful in quickly determining the power ratio expressed in decibels.

It should be remembered that when using voltage or current ratios, the two readings should be taken for points that have the same impedance otherwise this needs to be accommodated. Otherwise the decibel levels given will be incorrect.


Watch the video: RSD Academy - A Quick Look at Decibels (January 2021).