# Watts to dBm Conversion Calculator

• Watts

• dBm

## Watt To dBm Conversion Table

 Power (watt) Power (dBm) 0 W not defined 0+ W -∞ dBm 0.00001 W -20 dBm 0.0001 W -10 dBm 0.001 W 0 dBm 0.01 W 10 dBm 0.1 W 20 dBm 1 W 30 dBm 10 W 40 dBm 100 W 50 dBm 1000 W 60 dBm 10000 W 70 dBm

#### What is Watts to dBm conversion calculator?

Watts to dBm conversion calculator converts the power value in Watts to dBm value. Watt (W) is a SI unit for measuring the power, and dBm stands for decibel-milliwatts, which is a decibel unit for measuring the power.

#### How to calculate power (in dBm) for the given watts?

The following formula is used to determine the power value (in dBm unit) for a given power level in Watt (W).

dBm stands for decibel-milliwatts; is a dimensionless unit used to define/measure signal strength (power level), with reference to 1 milliwatt. (i.e., the power level of 0dBm represents 1milliwatt). The dBm is a convenient unit; used in radio, microwave, audio applications, and fiber-optical communications networks to measure signal strength.

Signalâ€™s power level lower than 1 mW has negative dBm values, and the signals stronger than 1 mW have positive dBm values.

The benefit of expressing signal strength (power) in dBm is: we can express both very large and very small power values (W) in a short range of number. For example, 5 mW is equal to 7 dBm, and 100 KW is equal to 80 dBm. Also, the decibel unit representation simplifies the multiplication and division operation into addition and subtraction.