dBm Cheatsheet

I recently used an oscilloscope to probe some RF signals, and I wanted to calculate the peak-to-peak voltage to expect from a known power output (in dBm) into a 50 ohm load. So I made this cheatsheet:

dBm	Watts	V RMS	Vpk-pk
0	1m	223.61m	316.23m
1	1.26m	250.89m	354.81m
2	1.58m	281.5m	398.11m
3	2m	315.85m	446.68m
4	2.51m	354.39m	501.19m
5	3.16m	397.64m	562.34m
6	3.98m	446.15m	630.96m
7	5.01m	500.59m	707.95m
8	6.31m	561.67m	794.33m
9	7.94m	630.21m	891.25m
10	10m	707.11m	1
11	12.59m	793.39m	1.12
12	15.85m	890.19m	1.26
13	19.95m	998.81m	1.41
14	25.12m	1.12	1.58
15	31.62m	1.26	1.78
16	39.81m	1.41	2
17	50.12m	1.58	2.24
18	63.1m	1.78	2.51
19	79.43m	1.99	2.82
20	100m	2.24	3.16
21	125.89m	2.51	3.55
22	158.49m	2.82	3.98
23	199.53m	3.16	4.47
24	251.19m	3.54	5.01
25	316.23m	3.98	5.62
26	398.11m	4.46	6.31
27	501.19m	5.01	7.08
28	630.96m	5.62	7.94
29	794.33m	6.3	8.91
30	1	7.07	10
31	1.26	7.93	11.22
32	1.58	8.9	12.59
33	2	9.99	14.13
34	2.51	11.21	15.85
35	3.16	12.57	17.78
36	3.98	14.11	19.95
37	5.01	15.83	22.39
38	6.31	17.76	25.12
39	7.94	19.93	28.18
40	10	22.36	31.62
41	12.59	25.09	35.48
42	15.85	28.15	39.81
43	19.95	31.59	44.67
44	25.12	35.44	50.12
45	31.62	39.76	56.23
46	39.81	44.62	63.1
47	50.12	50.06	70.79
48	63.1	56.17	79.43
49	79.43	63.02	89.13
50	100	70.71	100
51	125.89	79.34	112.2
52	158.49	89.02	125.89
53	199.53	99.88	141.25
54	251.19	112.07	158.49
55	316.23	125.74	177.83
56	398.11	141.09	199.53
57	501.19	158.3	223.87
58	630.96	177.62	251.19
59	794.33	199.29	281.84
60	1k	223.61	316.23

Here is a printable PDF and the source file (LibreOffice Calc).