Complete Wireless Design

Appendix B: Useful Tables

Table B.1: Conversion Chart for dBm to Milliwatts to Millivolts
dBm mW dBmV

mV RMS

mVp mVpp

50

0.000

3.0

0.7

1.0

2.0

45

0.000

2.0

1.3

1.8

3.6

40

0.000

7.0

2.2

3.2

6.3

35

0.000

12.0

4.0

5.6

11.2

30

0.001

17.0

7.1

10.0

20.0

25

0.003

22.0

12.6

17.8

35.6

20

0.010

27.0

22.4

31.6

63.2

15

0.032

32.0

39.8

56.2

112.5

10

0.100

37.0

70.7

100.0

200.0

5

0.316

42.0

125.7

177.8

355.7

0

1.000

47.0

223.6

316.2

632.5

1

1.259

48.0

250.9

354.8

709.6

2

1.585

49.0

281.5

398.1

796.2

3

1.995

50.0

315.9

446.7

893.4

4

2.512

51.0

354.4

501.2

1002.4

5

3.162

52.0

397.6

562.3

1124.7

6

3.981

53.0

446.2

631.0

1261.9

7

5.012

54.0

500.6

707.9

1415.9

8

6.310

55.0

561.7

794.3

1588.7

9

7.943

56.0

630.2

891.3

1782.5

10

10.000

57.0

707.1

1000.0

2000.0

11

12.589

58.0

793.4

1122.0

2244.0

12

15.849

59.0

890.2

1258.9

2517.9

13

19.953

60.0

998.8

1412.5

2825.1

14

25.119

61.0

1120.7

1584.9

3169.8

15

31.623

62.0

1257.4

1778.3

3556.6

16

39.811

63.0

1410.9

1995.3

3990.5

17

50.119

64.0

1583.0

2238.7

4477.4

18

63.096

65.0

1776.2

2511.9

5023.8

19

79.433

66.0

1992.9

2818.4

5636.8

20

100.000

67.0

2236.1

3162.3

6324.6

21

125.893

68.0

2508.9

3548.1

7096.3

22

158.489

69.0

2815.0

3981.1

7962.1

23

199.526

70.0

3158.5

4466.8

8933.7

24

251.189

71.0

3543.9

5011.9

10023.7

25

316.228

72.0

3976.4

5623.4

11246.8

26

398.107

73.0

4461.5

6309.6

12619.1

27

501.187

74.0

5005.9

7079.5

14158.9

28

630.957

75.0

5616.7

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