Watt Power = 10((dBm-30)/10)

There are some simple "shortcuts" that can help you do quick math.

You only need to remember that 30dBm is 1 Watt.

• Every additional 10dBm is 10 times the wattage

Every additional 3dBm is 2 times the Wattage

24dBm = 0.25 W

27dBm = 0.5 W

30dBm = 1 W

33dBm = 2 W

36dBm= 4 W

And if you want the full list: