Decibel-Watt (dBW)

dBW definition

dBW or decibel-watt is a unit of power in decibel scale, referenced to 1 watt (W).

The power in decibel-watts (P_(dBW)) is equal to 10 times base 10 logarithm of the power in watts (P_(W)):

P_(dBW) = 10 ⋅ log₁₀( P_(W) / 1W)

The power in watts (P_(W)) is equal to 10 raised by the power in decibel-watts (P_(dBW)) divided by 10:

P_(W) = 1W ⋅ 10^(P(dBW)^{/ 10)}

1 watt is equal to 0 dBW:

1W = 0dBW

1 milliwatt is equal to -30dBW:

1mW = 0.001W = -30dBW

dBW to dBm, Watt, mW conversion calculator

Convert dBW to dBm, watt, milliwatt.

Enter the power in one of the text boxes and press the Convert button:

Enter milliwatts:		mW
Enter watts:		W
Enter dBm:		dBm
Enter dBW:		dBW

How to convert dBW to Watt

How to convert power in dBW to watts (W).

The power in watts (P_(W)) is equal to 10 raised by the power in dBW (P_(dBW)) divided by 10:

P_(W) = 1W ⋅ 10^(P(dBW)^{/ 10)}

For example: what is the power in watts for power consumption of 20dBW?

Solution:

P_(W) = 1W ⋅ 10^{(20dBW / 10)} = 100W

How to convert Watt to dBW

How to convert power in watts (W) to dBW.

The power in dBW is equal to the base 10 logarithm of the power in watts (W):

P_(dBW) = 10 ⋅ log₁₀( P_(W) / 1W)

For example: what is the power in dBW for power consumption of 100W?

Solution:

P_(dBW) = 10 ⋅ log₁₀( 100W / 1W) = 20dBW

How to convert dBW to dBm

How to convert power in dBW to dBm.

The power in dBm is equal to the base 10 logarithm of the power in watts (W):

P_(dBm) = P_(dBW) + 30

For example: what is the power in dBm for power consumption of 20dBW?

Solution:

P_(dBm) = 20dBW + 30 = 50dBm

How to convert dBm to dBW

How to convert power in dBm to dBW.

The power in dBW (P_(dBW)) is equal to 10 raised by the power in dBm (P_(dBm)) divided by 10:

P_(dBW) = P_(dBm) – 30

For example: what is the power in watts for power consumption of 40dBm?

Solution:

P_(dBW) = 40dBm – 30 = 10dBW

dBW to dBm, Watt conversion table

Power (dBW)	Power (dBm)	Power (Watt)
-130 dBW	-100 dBm	0.1 pW
-120 dBW	-90 dBm	1 pW
-110 dBW	-80 dBm	10 pW
-100 dBW	-70 dBm	100 pW
-90 dBW	-60 dBm	1 nW
-80 dBW	-50 dBm	10 nW
-70 dBW	-40 dBm	100 nW
-60 dBW	-30 dBm	1 μW
-50 dBW	-20 dBm	10 μW
-40 dBW	-10 dBm	100 μW
-30 dBW	0 dBm	1 mW
-20 dBW	10 dBm	10 mW
-10 dBW	20 dBm	100 mW
-1 dBW	29 dBm	0.794328 W
0 dBW	30 dBm	1.000000 W
1 dBW	31 dBm	1.258925 W
10 dBW	40 dBm	10 W
20 dBW	50 dBm	100 W
30 dBW	60 dBm	1 kW
40 dBW	70 dBm	10 kW
50 dBW	80 dBm	100 kW
60 dBW	90 dBm	1 MW
70 dBW	100 dBm	10 MW
80 dBW	110 dBm	100 MW
90 dBW	120 dBm	1 GW
100 dBW	130 dBm	10 GW