Decibel (dB) Calculator

Convert between power ratios, voltage ratios, and decibels. Calculate dB gain or loss for audio, RF, and signal processing applications.

Input Parameters

Input Type

Power Ratio (P2/P1)

Results

Enter values and click Calculate

About Decibel (dB) Calculator

Decibels provide a logarithmic scale for comparing power or voltage ratios. 3 dB represents a doubling of power, while 6 dB represents a doubling of voltage.