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dBm to Watts and Watts to dBm Calculator

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What is dBm to Watts conversion calculator?

dBm to Watts conversion calculator converts the power value in dBm to Watss dBm value. Watt (W) is a SI unit for measuring the power, and dBm stands for decibel-milliwatts, which is a decibel unit for measuring the power.

How to calculate power (in dBm) for the given watts?

The following formula is used to determine the power value (in dBm unit) for a given power level in Watt (W).

dBm to Watts: P(W)=10P(dBm)−3010P(W) = 10^{\frac{P(dBm) - 30}{10}}

dBm means decibel-milliwatts. It is a unit that measures signal strength based on 1 milliwatt. For example, 0 dBm equals 1 milliwatt. dBm is useful in fields like radio, microwave, audio, and fiber-optic communications to assess signal strength.

Signals with a power level below 1 mW have negative dBm values, while signals stronger than 1 mW have positive dBm values.

The advantage of using dBm for signal strength is that it lets us represent both large and small power values with fewer numbers. For example, 5 mW is 7 dBm, and 100 kW is 80 dBm. Moreover, the decibel scale simplifies calculations, changing multiplication and division into addition and subtraction.

dBm to Watt Conversion Table

dBm Watts Description
-30 dBm 0.000001 W Low power
-29 dBm 0.000001 W Low power
-28 dBm 0.000002 W Low power
-27 dBm 0.000002 W Low power
-26 dBm 0.000003 W Low power
-25 dBm 0.000003 W Low power
-24 dBm 0.000004 W Low power
-23 dBm 0.000005 W Low power
-22 dBm 0.000006 W Low power
-21 dBm 0.000008 W Low power
-20 dBm 0.000010 W Low power
-19 dBm 0.000013 W Low power
-18 dBm 0.000016 W Low power
-17 dBm 0.000020 W Low power
-16 dBm 0.000025 W Low power
-15 dBm 0.000032 W Low power
-14 dBm 0.000040 W Low power
-13 dBm 0.000050 W Low power
-12 dBm 0.000063 W Low power
-11 dBm 0.000079 W Low power
-10 dBm 0.000100 W Low power
-9 dBm 0.000126 W Low power
-8 dBm 0.000158 W Low power
-7 dBm 0.000200 W Low power
-6 dBm 0.000251 W Low power
-5 dBm 0.000316 W Low power
-4 dBm 0.000398 W Low power
-3 dBm 0.000501 W Low power
-2 dBm 0.000631 W Low power
-1 dBm 0.000794 W Low power
0 dBm 0.001000 W Medium power
1 dBm 0.001259 W Medium power
2 dBm 0.001585 W Medium power
3 dBm 0.001995 W Medium power
4 dBm 0.002512 W Medium power
5 dBm 0.003162 W Medium power
6 dBm 0.003981 W Medium power
7 dBm 0.005012 W Medium power
8 dBm 0.006310 W Medium power
9 dBm 0.007943 W Medium power
10 dBm 0.010000 W Medium power
11 dBm 0.012589 W Medium power
12 dBm 0.015849 W Medium power
13 dBm 0.019953 W Medium power
14 dBm 0.025119 W Medium power
15 dBm 0.031623 W Medium power
16 dBm 0.039811 W Medium power
17 dBm 0.050119 W Medium power
18 dBm 0.063096 W Medium power
19 dBm 0.079433 W Medium power
20 dBm 0.100000 W Medium power
21 dBm 0.125893 W Medium power
22 dBm 0.158489 W Medium power
23 dBm 0.199526 W Medium power
24 dBm 0.251189 W Medium power
25 dBm 0.316228 W Medium power
26 dBm 0.398107 W Medium power
27 dBm 0.501187 W Medium power
28 dBm 0.630957 W Medium power
29 dBm 0.794328 W Medium power
30 dBm 1.000000 W Medium power
31 dBm 1.258925 W Medium power
32 dBm 1.584893 W Medium power
33 dBm 1.995262 W Medium power
34 dBm 2.511886 W Medium power
35 dBm 3.162278 W Medium power
36 dBm 3.981072 W Medium power
37 dBm 5.011872 W Medium power
38 dBm 6.309573 W Medium power
39 dBm 7.943282 W Medium power
40 dBm 10.000000 W Medium power
41 dBm 12.589254 W Medium power
42 dBm 15.848932 W Medium power
43 dBm 19.952623 W Medium power
44 dBm 25.118864 W Medium power
45 dBm 31.622777 W Medium power
46 dBm 39.810717 W Medium power
47 dBm 50.118723 W Medium power
48 dBm 63.095734 W Medium power
49 dBm 79.432823 W Medium power
50 dBm 100.000000 W Medium power
51 dBm 125.892541 W Medium power
52 dBm 158.489319 W Medium power
53 dBm 199.526231 W Medium power
54 dBm 251.188643 W Medium power
55 dBm 316.227766 W Medium power
56 dBm 398.107171 W Medium power
57 dBm 501.187234 W Medium power
58 dBm 630.957344 W Medium power
59 dBm 794.328235 W Medium power
60 dBm 1000.000000 W Medium power
61 dBm 1258.925412 W High power
62 dBm 1584.893192 W High power
63 dBm 1995.262315 W High power
64 dBm 2511.886432 W High power
65 dBm 3162.277660 W High power
66 dBm 3981.071706 W High power
67 dBm 5011.872336 W High power
68 dBm 6309.573445 W High power
69 dBm 7943.282347 W High power
70 dBm 10000.000000 W High power
71 dBm 12589.254118 W High power
72 dBm 15848.931925 W High power
73 dBm 19952.623150 W High power
74 dBm 25118.864315 W High power
75 dBm 31622.776602 W High power
76 dBm 39810.717055 W High power
77 dBm 50118.723363 W High power
78 dBm 63095.734448 W High power
79 dBm 79432.823472 W High power
80 dBm 100000.000000 W High power
81 dBm 125892.541179 W High power
82 dBm 158489.319246 W High power
83 dBm 199526.231497 W High power
84 dBm 251188.643151 W High power
85 dBm 316227.766017 W High power
86 dBm 398107.170553 W High power
87 dBm 501187.233627 W High power
88 dBm 630957.344480 W High power
89 dBm 794328.234724 W High power
90 dBm 1000000.000000 W High power