RF Level Units

dBm

dBm is a power unit, reference 0 dBm(z) defined as 1 milliwatt dissipated in the defined impedance (z)

dBµV

dBµV is a voltage unit, reference is defined as 0 dBµV = 1 µVolt

Level Correlation Table

(Z = 50 Ohms)
dBm dBµV Power Voltage
+20 dBm 127 dBµV 100 mW 2.23 V
+10 dBm 117 dBµV 10 mW 707 mV
0 dBm 107 dBµV 1 mW 223 mV
-10 dBm 97 dBµV 100 µW 70.7 mV
-20 dBm 87 dBµV 10 µW 22.3 mV
-30 dBm 77 dBµV 1 µW 7.07 mV
-40 dBm 67 dBµV 100 nW 2.23 mV
-50 dBm 57 dBµV 10 nW 707 µV
-60 dBm 47 dBµV 1 nW 223 µV
-70 dBm 37 dBµV 100 pW 70.7 µV
-80 dBm 27 dBµV 10 pW 22.3 µV
-90 dBm 17 dBµV 1 pW 7.07 µV
-100 dBm 7 dBµV 0.1 pW 2.23 µV
-110 dBm -3 dBµV 0.01 pW 707 nV
-120 dBm -13 dBµV 0.001 pW 223 nV