dBm to Watt Conversion Chart

 
dBm = log10 (mW)*10
mW =10^(dBm/10
  	  	 
40 dBm 	10.00 watts 	 
36 dBm 	4.00 watts 	< Maximum ERP allowed by FCC in U.S. 
30 dBm 	1.00 watts 	 
27 dBm 	500 milliwatts 	 
26 dBm 	400 milliwatts 	 
25 dBm 	320 milliwatts 	 
24 dBm 	250 milliwatts 	 
23 dBm 	200 milliwatts 	 
22 dBm 	160 milliwatts 	 
21 dBm 	130 milliwatts 	 
20 dBm 	100 milliwatts 	< Maximum ERP allowed by E.T.S.I. In Europe
15 dBm 	32 milliwatts 	 
10 dBm 	10 milliwatts 	 
5 dBm 	3.2 milliwatts 	 
4 dBm 	2.5 milliwatts 	 
3 dBm 	2.0 milliwatts 	 
2 dBm 	1.6 milliwatts 	 
1 dBm 	1.3 milliwatts 	 
0 dBm 	1.0 milliwatts 	 
1- dBm 	0.79 milliwatts 	 
5- dBm 	0.32 milliwatts 	 
10- dBm 	0.1 milliwatts 	 
20- dBm 	0.01 milliwatts 	 
30- dBm 	0.001 milliwatts 	 
40- dBm 	0.0001 milliwatts 	 
50- dBm 	0.00001 milliwatts 	 
60- dBm 	0.000001 milliwatts 	 
70- dBm 	0.0000001 milliwatts 	 
80- dBm 	0.00000001 milliwatts 	< Receive threshold for most WLAN devices