dBm-Watt Conversion App

dBm to Watt

dBm mW W

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dBm to Watt Conversion Table

dBm LEVELPOWERNOTES
40 dBm10 W
36 dBm4 WMaximum ERP allowed by FCC in U.S.
30 dBm1 W
27 dBm500 mW
26 dBm400 mW
25 dBm320 mW
24 dBm250 mW
23 dBm200 mWTypical output from WLAN devices at 915MHz
22 dBm160 mW
21 dBm130 mW
20 dBm100 mWMaximum ERP allowed by E.T.S.I. In Europe
15 dBm32 mWTypical Wireless LAN transmission power in laptops
10 dBm10 mW
5 dBm3.2 mW
4 dBm2.5 mW
3 dBm2.0 mW
2 dBm1.6 mW
1 dBm1.3 mW
0 dBm1.0 mW
-1 dBm0.79 mW
-5 dBm0.32 mW
-10 dBm0.1 mWTypical maximum received signal power (−10 to −30 dBm) of wireless networks
-20 dBm0.01 mW
-30 dBm0.001 mW
-40 dBm0.0001 mW
-50 dBm0.00001 mW
-60 dBm0.000001 mW
-70 dBm0.0000001 mW
-80 dBm0.00000001 mWReceive threshold for most WLAN devices