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


<< Previous   |   Next >>



Read more popular reference pages & tables . . . . .

dBm / Watts table Trig functions Fourier series Constants
SI base units SI prefixes Sidereal time Greek letters
Resistivity Physical constants Capacitance Circuit symbols

Return to Formulae & data menu





Sensors, Actuators, and Their Interfaces: A Multidisciplinary Introduction
Sensors, Actuators, and Their Interfaces: A Multidisciplinary Introduction

Nathan Ida
Sensors and actuators are becoming increasingly important. While they had...
Read more . .

USA bookstore UK bookstore


Radio-Electronics.com is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on Radio-Electronics.com, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy