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Decibel Calculator

Decibels pages include:

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, adn the calculated answer will be provided.

Decibel calculator for power levels

Other popular reference pages & tables . . . . .
• dBm / Watts table	• Trig functions	• Fourier series	• Constants
• SI base units	• SI prefixes	• Sidereal time	• Greek letters
• Resistivity	• Physical constants	• Capacitance	• Circuit symbols


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



Results:
Decibel Value:		dB