decibel (dB) conversion to voltage and power


Enter the value that you know in the appropriate box and hit  [calculate]  below that box

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decibels (dB) Voltage Gain Power Gain    
 
  

The dBm is a logarithmic measure of power compared to 1 mW, which means that it is power dependent.
It can be converted to a voltage, if the load impedance is known.
Typically the load impedance used in audio applications is 600 ohms.

 Impedance =  ohms   - You can enter your own value of load impedance here if it is Not 600 ohms
dBm Power (watts) Vrms Vpk  
 
A simple rule to remember:-
When working with power, 3 dB is twice the power, 10 dB is 10 times.
When working with voltage or current, 6 dB is twice, 20 dB is 10 times