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)

V_{rms}

V_{pk}

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