Wireless Calculators - milliWatts (mW) and dBm

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	milliWatts and dBm Conversion

Using the calculator below you can convert dBm to watts and milliWatts. dBm is used to express an absolute value of power relative to a milliwatt.

Note: The final value represents a first order approximation and should only be used as a guide. No guarantees or warranties are implied accordingly

dBm = (10Log₁₀(milliWatts))
1 mW = 0 dBm

Watts = 10^{((dBm - 30)/10)}
milliWatts = 10^(dBm/10)