From to mW to dBm
dBm = 10log10Prms
From to dBm to mW
Prms = 10 (dBm /10)
Where Prms = Power in mW
The following table is also useful.
dBm | µW |
-40 | 0.100 |
-39 | 0.126 |
-38 | 0.158 |
-37 | 0.200 |
-36 | 0.251 |
-35 | 0.316 |
-34 | 0.398 |
-33 | 0.501 |
-32 | 0.631 |
-31 | 0.794 |
-30 | 1.000 |
-29 | 1.259 |
-28 | 1.585 |
-27 | 1.995 |
-26 | 2.512 |
-25 | 3.162 |
-24 | 3.981 |
-23 | 5.012 |
-22 | 6.310 |
-21 | 7.943 |
-20 | 10.00 |
-19 | 12.59 |
-18 | 15.85 |
-17 | 19.95 |
-16 | 25.12 |
-15 | 31.62 |
-14 | 39.81 |
-13 | 50.12 |
-12 | 63.10 |
-11 | 79.43 |
-10 | 100.00 |
-9 | 125.89 |
-8 | 158.49 |
-7 | 199.53 |
-6 | 251.19 |
-5 | 316.23 |
-4 | 398.11 |
-3 | 501.19 |
-2 | 630.96 |
-1 | 794.33 |
