How does one convert Watts to dBm?
Use a calculator, conversion table (pdf) or equation to convert the power units. Here is a short conversion table: dBm Watts 0 .001 15 .032 24 .250 27 .500 30 1.000 36 4.000 The equation is: dBm = 10 * (log (1000 * P)) P = Power in Watts 1000mW = 1 Watt Note, doubling the wattage increases dBm by 3. Here is a more comprehensive tutorial on Using and Understanding Decibels.