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POWER / CONVERSION

dBm / dBW ↔ Watts

Convert logarithmic power to linear watts.

dBm

Interactive calculator

dBm → W

ResultLinear power
1.0 W
Quick values

Sample code

import math

def dbm_to_watts(dbm):
    return 10 ** ((dbm - 30) / 10)

def dbw_to_watts(dbw):
    return 10 ** (dbw / 10)

def watts_to_dbm(watts):
    return 10 * math.log10(watts) + 30

def watts_to_dbw(watts):
    return 10 * math.log10(watts)