GFK-2489 Chapter 8 Technical Reference 8-15
8
Dbm-Watts-Volts Conversion Chart The table below shows the equivalent voltage or wattage of an RF power expressed in dBm
for a 50-Ohm system.
dBm V Po dBm V Po DBm mV Po dBm µV Po
+53 100.0 200W 0 .225 1.0mW -49 0.80 -98 2.9
+50 70.7 100W -1 .200 .80mW -50 0.71 .01µW -99 2.51
+49 64.0 80W -2 .180 .64mW -51 0.64 -100 2.25 .1pW
+48 58.0 64W -3 .160 .50mW -52 0.57 -101 2.0
+47 50.0 50W -4 .141 .40mW -53 0.50 -102 1.8
+46 44.5 40W -5 .125 .32mW -54 0.45 -103 1.6
+45 40.0 32W -6 .115 .25mW -55 0.40 -104 1.41
+44 32.5 25W -7 .100 .20mW -56 0.351 -105 1.27
+43 32.0 20W -8 .090 .16mW -57 0.32 -106 1.18
+42 28.0 16W -9 .080 .125mW -58 0.286
+41 26.2 12.5W -10 .071 .10mW -59 0.251 dBm nV Po
+40 22.5 10W -11 .064 -60 0.225 .001µW -107 1000
+39 20.0 8W -12 .058 -61 0.200 -108 900
+38 18.0 6.4W -13 .050 -62 0.180 -109 800
+37 16.0 5W -14 .045 -63 0.160 -110 710 .01pW
+36 14.1 4W -15 .040 -64 0.141 -111 640
+35 12.5 3.2W -16 .0355 -112 580
+34 11.5 2.5W dBm µV Po -113 500
+33 10.0 2W dBm mV Po -65 128 -114 450
+32 9.0 1.6W -17 31.5 -66 115 -115 400
+31 8.0 1.25W -18 28.5 -67 100 -116 355
+30 7.10 1.0W -19 25.1 -68 90 -117 325
+29 6.40 800mW -20 22.5 .01mW -69 80 -118 285
+28 5.80 640mW -21 20.0 -70 71 .1nW -119 251
+27 5.00 500mW -22 17.9 -71 65 -120 225 .001pW
+26 4.45 400mW -23 15.9 -72 58 -121 200
+25 4.00 320mW -24 14.1 -73 50 -122 180
+24 3.55 250mW -25 12.8 -74 45 -123 160
+23 3.20 200mW -26 11.5 -75 40 -124 141
+22 2.80 160mW -27 10.0 -76 35 -125 128
+21 2.52 125mW -28 8.9 -77 32 -126 117
+20 2.25 100mW -29 8.0 -78 29 -127 100
+19 2.00 80mW -30 7.1 .001mW -79 25 -128 90
+18 1.80 64mW -31 6.25 -80 22.5 .01nW -129 80 .1ƒW
+17 1.60 50mW -32 5.8 -81 20.0 -130 71
+16 1.41 40mW -33 5.0 -82 18.0 -131 61
+15 1.25 32mW -34 4.5 -83 16.0 -132 58
+14 1.15 25mW -35 4.0 -84 11.1 -133 50
+13 1.00 20mW -36 3.5 -85 12.9 -134 45