## Decibel Calculators

 dB factor (ratio) field size energy size

## Another Decibel Calculator

 dB: Voltage Gain: Power Gain:

 dBm: Power: Voltage: Load = ohms

The decibel (dB) is a logarithmic unit used to express the ratio between two values of a physical quantity, often power or intensity.

dB power ratio amplitude ratio
100   10 000 000 000 100 000
90 1 000 000 000 31 623
80 100 000 000 10 000
70 10 000 000 3 162
60 1 000 000 1 000
50 100 000 316 .2
40 10 000 100
30 1 000 31 .62
20 100 10
10 10 3 .162
6 3 .981 1 .995 (~2)
3 1 .995 (~2) 1 .413
1 1 .259 1 .122
0 1 1
-1 0 .794 0 .891
-3 0 .501 (~1/2) 0 .708
-6 0 .251 0 .501 (~1/2)
-10 0 .1 0 .316 2
-20 0 .01 0 .1
-30 0 .001 0 .031 62
-40 0 .000 1 0 .01
-50 0 .000 01 0 .003 162
-60 0 .000 001 0 .001
-70 0 .000 000 1 0 .000 316 2
-80 0 .000 000 01 0 .000 1
-90 0 .000 000 001 0 .000 031 62
-100 0 .000 000 000 1 0 .000 01

Enter any one value and click on calculate button. Result will be displayed.

Thinkcalculator.com provides you helpful and handy calculator resources.