Gain to dB Calculator

The two calculators below convert input/output power and voltage to a Power Gain in dB (deciBel).

Linear Power to dB Gain


	

			

		

						

				

				

                

			

			
						

		

		






Formula





GdB = 10*log10(Pout/Pin)





Linear Voltage to dB Gain



	

	

			

		

						

				

				

                

			

			
						

		

		






Formula





GdB = 20*log10(Vout/Vin)





This assumes the input and output impedance is the same.





 dB to Gain Calculator