Decibel Calculator

- simple to use calculator that converts two power levels into the decibel ratio.

The calculation of a power ratio in decibels requires the use of logarithms.

Our simple to use decibel calculator provides the calculation on your computer, be it a desktop, laptop or mobile device.

Simply enter the values for the input and output levels into the decibel calculator, press calculate, and the calculated answer will be provided.

Decibel calculator for power levels

Decibel Calculator for Power Levels


Enter Values:

Power Input:   Watts or milliwatts
Power Output:   Watts or milliwatts (Must be the same units as above)


Decibel Value:   dB

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