dBm

dBm is decibel-milliwatt. dBm is electrical power unit in decibels, which is referenced to 1 milliwatt.

• dBm definition
• dBm table
• dBm to mW conversion calculator

dBm definition

1 milliwatt is equal to 0dBm:

1mW = 0dBm

1 watt is equal to 30dBm:

1W = 1000mW = 30dBm

The power in dBm is equal to the base 10 logarithm of the power in mW:

P_(dBm) = 10 · log₁₀( P_(mW) )

The power in mW is equal to 10 raised by the power in dBm divided by 10:

P_(mW) = 10^(P(dBm) ^{/ 10)}

 

P_dBm is the power in decibel-milliwatt (dBm) units.

P_mW is the power in milliwatt (mW) units.

dBm table

Power (dBm)	Power (watt)
-100 dBm	0.1 pW
-90 dBm	1 pW
-80 dBm	10 pW
-70 dBm	100 pW
-60 dBm	1 nW
-50 dBm	10 nW
-40 dBm	100 nW
-30 dBm	1 μW
-20 dBm	10 μW
-10 dBm	100 μW
-1 dBm	794 μW
0 dBm	1.000 mW
1 dBm	1.259 mW
10 dBm	10 mW
20 dBm	100 mW
30 dBm	1 W
40 dBm	10 W
50 dBm	100 W
60 dBm	1 kW
70 dBm	10 kW
80 dBm	100 kW

 

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See also

• dBm to mW conversion calculator
• mW to dBm conversion calculator
• dBm to watts conversion calculator
• Watts to dBm conversion calculator
• Electric power
• Decibel
• Watt
• Electrical units
• Logarithm
• Receiver Signal Strength Indication (RSSI) - Wikipedia