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.

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by **StudMuffin** edited by **korym**