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Watts <-> dBm conversion

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Watts <-> dBm conversion diagram
calc
The logarithmic power units of dBm are defined such that 1 W = 0 dBm, and each tenfold rise in W gives a ten unit rise in dBm.
Power
PowerdBm

Power
PowerdBm
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notes
In high frequency systems, power is often given in the logarithmic units of dBm, in order to allow a convenient span over a many orders of magnitude with a small range of numbers.
Fill in either the power in W or the power in dBm in the blue box, and the calc will provide the equal dBm or W value in the orange box.