Watts to dBm Conversion Calculator

• Watts to dBm conversion calculator
• How to convert watts to dBm
• Watt to dBm conversion table

Watts to dBm Conversion Calculator

Watts (W) to dBm, power conversion calculator.

Enter the power in watts and press the Convert button:

	Enter watts:		W
	dBm result:		dBm

dBm to watts conversion calculator ►

How to convert watts to dBm

The power conversion of watts to dBm is given by the formula:

P_(dBm) = 10 · log₁₀( 1000 · P_(watt) ) = 10 · log₁₀( P_(watt) ) + 30

so

1W = 30dBm

 

For example when the power P=20W,

 

P_(dBm) = 10 · log₁₀(1000·20W) = 43.0103dBm

Watt to dBm conversion table

Power (mW)	Power (dBm)
0 W	not defined
0+ W	-∞ dBm
0.00001 W	-20.0000 dBm
0.0001 W	-10.0000 dBm
0.001 W	0.0000 dBm
0.01 W	10.0000 dBm
0.1 W	20.0000 dBm
1 W	30.0000 dBm
10 W	40.0000 dBm
100 W	50.0000 dBm
1000 W	60.0000 dBm
10000 W	70.0000 dBm
100000 W	80.0000 dBm
1000000 W	90.0000 dBm

 

dBm to watts conversion ►

 

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See also

• dBm to watts conversion
• mW to dBm conversion
• Watts to mW conversion
• Watts to BTU/hr conversion
• Watts to HP conversion
• dBm
• Watt
• Electric power