Dbm - Volts - Watts Conversion Chart
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1
2dBm - volts - watts conversion
(50-ohm system)
μ μ μ μ μ V
dBm
V
P
dBm
V
P
dBm
mV
P
dBm
P
o
o
o
o
+53
100.0
200W
0
.225
1.0 mW
-49
0.80
-98
2.9
.01 μW
+50
70.7
100W
-1
.200
.80 mW
-50
0.71
-99
2.51
+49
64.0
80W
-2
.180
.64 mW
-51
0.64
-100
2.25
.1 pW
+48
58.0
64W
-3
.160
.50 mW
-52
0.57
-101
2.0
+47
50.0
50W
-4
.141
.40 mW
-53
0.50
-102
1.8
+46
44.5
40W
-5
.125
.32 mW
-54
0.45
-103
1.6
+45
40.0
32W
-6
.115
.25 mW
-55
0.40
-104
1.41
+44
32.5
25W
-7
.100
.20 mW
-56
0.351
-105
1.27
+43
32.0
20W
-8
.090
.16 mW
-57
0.32
-106
1.18
+42
28.0
16W
-9
.080
.125 mW
-58
0.286
+41
26.2
12.5W
-10
.071
.10 mW
-59
0.251
dBm
nV
.001 μW
+40
22.5
10W
-11
.064
-60
0.225
-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
.01 pW
+36
14.1
4W
-15
.040
-64
0.141
-109
640
+35
12.5
3.2W
-16
.0355
-112
580
μ μ μ μ μ V
+34
11.5
2.5W
dBm
-113
500
+33
10.0
2W
dBm
mV
-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
825
+29
6.40
800 mW
-20
22.5
.01 mW
-69
80
-118
285
+28
5.80
640 mW
-21
20.0
-70
71
.1nW
-119
251
+27
5.00
500 mW
-22
17.9
-71
65
-120
225
.001 pW
+26
4.45
400 mW
-23
15.9
-72
58
-121
200
+25
4.00
320 mW
-24
14.1
-73
50
-122
180
+24
3.55
250 mW
-25
12.8
-74
45
-123
160
+23
3.20
200 mW
-26
11.5
-75
40
-124
141
+22
2.80
160 mW
-27
10.0
-76
35
-125
128
+21
2.52
125 mW
-28
8.9
-77
32
-126
117
+20
2.25
100 mW
-29
8.0
-78
29
-127
100
+19
2.00
80 mW
-30
7.1
.001mW
-79
25
-128
90
+18
1.80
64 mW
-31
6.25
-80
22.5
.01 nW
-129
80
+17
1.60
50 mW
-32
5.8
-81
20.0
-130
71
.1ƒW
+16
1.41
40 mW
-33
5.0
-82
18.0
-131
61
+15
1.25
32 mW
-34
4.5
-83
16.0
-132
58
+14
1.15
25 mW
-35
4.0
-84
11.1
-133
50
+13
1.00
20 mW
-36
3.5
-85
12.9
-134
45
+12
.90
16 mW
-37
3.2
-86
11.5
-135
40
+11
.80
12.5 mW
-38
2.85
-87
10.0
-136
35
+10
.71
10 mW
-39
2.5
-88
9.0
-137
33
+9
.64
8 mW
-40
2.25
.1μW
-89
8.0
-138
29
+8
.58
6.4 mW
-41
2.0
-90
7.1
.001 nW
-139
25
+7
.500
5 mW
-42
1.8
-91
6.1
-140
23
.01ƒW
+6
.445
4 mW
-43
1.6
-92
5.75
+5
.400
3.2 mW
-44
1.4
-93
5.0
+4
.355
2.5 mW
-45
1.25
-94
4.5
+3
.320
2.0 mW
-46
1.18
-95
4.0
+2
.280
1.6 mW
-47
1.00
-96
3.51
+1
.252
1.25 mW
-48
0.90
-97
3.2
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