Signal level conversions

Power (dBm)	Power (dBμV)	Power (dBV)	Power (W)	Voltage (V_RMS)	Voltage (V_PP)
70	177	57	10 kW	707.95 V	2 kV
60	167	47	1000 W	223.87 V	633.21 V
50	157	37	100 W	70.79 V	200.24 V
40	147	27	10 W	22.39 V	63.32 V
30	137	17	1 W	7.07 V	20.02 V
20	127	7	0.1 W	2.24 V	6.33 V
10	117	-3	10.00 mW	707.95 mV	2.00 V
9	116	-4	7.94 mW	630.96 mV	1.78 V
8	115	-5	6.31 mW	562.34 mV	1.59 V
7	114	-6	5.01 mW	501.19 mV	1.42 V
6	113	-7	3.98 mW	446.68 mV	1.26 V
5	112	-8	3.16 mW	398.11 mV	1.13 V
4	111	-9	2.51 mW	354.81 mV	1.00 V
3	110	-10	2.00 mW	316.23 mV	0.89 V
2	109	-11	1.58 mW	281.84 mV	0.80 V
1	108	-12	1.26 mW	251.19 mV	0.71 V
0	107	-13	1.00 mW	223.87 mV	0.63 V
-1	106	-14	794.33 μW	199.53 mV	564.35 mV
-2	105	-15	630.96 μW	177.83 mV	502.97 mV
-3	104	-16	501.19 μW	158.49 mV	448.28 mV
-4	103	-17	398.11 μW	141.25 mV	399.53 mV
-5	102	-18	316.23 μW	125.89 mV	356.08 mV
-6	101	-19	251.19 μW	112.20 mV	317.35 mV
-7	100	-20	199.53 μW	100 mV	282.84 mV
-8	99	-21	158.49 μW	89.13 mV	252.08 mV
-9	98	-22	125.89 μW	79.43 mV	224.67 mV
-10	97	-23	100.00 μW	70.79 mV	200.24 mV
-20	87	-33	10.00 μW	22.39 mV	63.32 mV
-30	77	-43	1.00 μW	7.08 mV	20.02 mV
-40	67	-53	0.10 μW	2.24 mV	6.33 mV
-50	57	-63	0.01 μW	0.71 mV	2.00 mV
-60	47	-73	1000 pW	223.87 μV	633.21 μV
-70	37	-83	100 pW	70.79 μV	200.24 μV
-80	27	-93	10 p W	22.39 μV	63.32 μV
-90	17	-103	1 pW	7.08 μV	20.02 μV
-100	7	-113	0.1 pW	2.24 μV	6.33 μV
-107	0	-120	0.02 pW	1 μV	2.83 μV
-110	-3	-123	0.01 pW	0.71 μV	2.00 μV
-120	-13	-133	0.001 pW	0.23 μV	0.63 μV

Formulas used for calculating table values

In all calculations a pure sine wave signal in a 50 ohm load is assumed.

P_dBm to P_dBμV

P_{dB\mu V}= P_{dBm} - 107

P_dBμV to P_dBV

P_{dBV}= P_{dB\mu V} - 120

P_dBm to P_W

P_{W}= 10^{(\frac{P_{dBm} - 30}{10})}

P_dBm to V_RMS

U_{RMS}= \sqrt{P_{dBm} \cdot {50 \Omega}}

V_RMS to V_PP

U_{PP}= U_{RMS} \cdot 2\sqrt{2}