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Conversion Charts
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Temperature:
Celsius to Fahrenheit
Fahrenheit to Celsius
Pressure:
Inches of Mercury to
Millibars
Millibars to Inches of
Mercury
Values in a Standard
Atmosphere
Wind Speed:
MPH to Knots to Meters/Second
Knots to MPH to Meters/Second
Celsius
to Fahrenheit Conversion Table
°C °F °C °F °C °F °C °F
50 122.0 27 80.6 4 39.2 -19 -2.2
49 120.2 26 78.8 3 37.4 -20 -4.0
48 118.4 25 77.0 2 35.6 -21 -5.8
47 116.6 24 75.2 1 33.8 -22 -7.6
46 114.8 23 73.4 0 32.0 -23 -9.4
45 113.0 22 71.6 -1 30.2 -24 -11.2
44 111.2 21 69.8 -2 28.4 -25 -13.0
43 109.4 20 68.0 -3 26.6 -26 -14.8
42 107.6 19 66.2 -4 24.8 -27 -16.6
41 105.8 18 64.4 -5 23.0 -28 -18.4
40 104.0 17 62.6 -6 21.2 -29 -20.2
39 102.2 16 60.8 -7 19.4 -30 -22.0
38 100.4 15 59.0 -8 17.6 -31 -23.8
37 98.6 14 57.2 -9 15.8 -32 -25.6
36 96.8 13 55.4 -10 14.0 -33 -27.4
35 95.0 12 53.6 -11 12.2 -34 -29.2
34 93.2 11 51.8 -12 10.4 -35 -31.0
33 91.4 10 50.0 -13 8.6 -36 -32.8
32 89.6 9 48.2 -14 6.8 -37 -34.6
31 87.8 8 46.4 -15 5.0 -38 -36.4
30 86.0 7 44.6 -16 3.2 -39 -38.2
29 84.2 6 42.8 -17 1.4 -40 -40.0
28 82.4 5 41.0 -18 -0.4
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Fahrenheit
to Celsius Conversion Table
°F °C °F °C °F °C °F °C
125 51.6 83 28.3 41 5.0 -1 -18.3
124 51.1 82 27.8 40 4.4 -2 -18.9
123 50.5 81 27.2 39 3.9 -3 -19.4
122 50.0 80 26.6 38 3.3 -4 -20.0
121 49.4 79 26.1 37 2.8 -5 -20.5
120 48.8 78 25.5 36 2.2 -6 -21.1
119 48.3 77 25.0 35 1.7 -7 -21.6
118 47.7 76 24.4 34 1.1 -8 -22.2
117 47.2 75 23.9 33 0.6 -9 -22.8
116 46.6 74 23.3 32 0.0 -10 -23.3
115 46.1 73 22.8 31 -0.6 -11 -23.9
114 45.5 72 22.2 30 -1.1 -12 -24.4
113 45.0 71 21.6 29 -1.7 -13 -25.0
112 44.4 70 21.1 28 -2.2 -14 -25.5
111 43.8 69 20.5 27 -2.8 -15 -26.1
110 43.3 68 20.0 26 -3.3 -16 -26.6
109 42.7 67 19.4 25 -3.9 -17 -27.2
108 42.2 66 18.9 24 -4.4 -18 -27.8
107 41.6 65 18.3 23 -5.0 -19 -28.3
106 41.1 64 17.8 22 -5.6 -20 -28.9
105 40.5 63 17.2 21 -6.1 -21 -29.4
104 40.0 62 16.7 20 -6.7 -22 -30.0
103 39.4 61 16.1 19 -7.2 -23 -30.5
102 38.9 60 15.5 18 -7.8 -24 -31.1
101 38.3 59 15.0 17 -8.3 -25 -31.6
100 37.7 58 14.4 16 -8.9 -26 -32.2
99 37.2 57 13.9 15 -9.4 -27 -32.7
98 36.6 56 13.3 14 -10.0 -28 -33.3
97 36.1 55 12.8 13 -10.5 -29 -33.9
96 35.5 54 12.2 12 -11.1 -30 -34.4
95 35.0 53 11.7 11 -11.7 -31 -35.0
94 34.4 52 11.1 10 -12.2 -32 -35.5
93 33.9 51 10.5 9 -12.8 -33 -36.1
92 33.3 50 10.0 8 -13.3 -34 -36.6
91 32.7 49 9.4 7 -13.9 -35 -37.2
90 32.2 48 8.9 6 -14.4 -36 -37.7
89 31.6 47 8.3 5 -15.0 -37 -38.3
88 31.1 46 7.8 4 -15.5 -38 -38.9
87 30.5 45 7.2 3 -16.1 -39 -39.4
86 30.0 44 6.7 2 -16.7 -40 -40.0
85 29.4 43 6.1 1 -17.2
84 28.9 42 5.6 0 -17.8
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Inches
of Mercury to Millibars Conversion Chart
In Hg Mb In Hg Mb In Hg Mb In Hg Mb
29.00 982.06 29.50 998.99 30.00 1015.92 30.50 1032.85
29.01 982.39 29.51 999.33 30.01 1016.26 30.51 1033.19
29.02 982.73 29.52 999.67 30.02 1016.60 30.52 1033.53
29.03 983.07 29.53 1000.00 30.03 1016.94 30.53 1033.87
29.04 983.41 29.54 1000.34 30.04 1017.27 30.54 1034.21
29.05 983.75 29.55 1000.68 30.05 1017.61 30.55 1034.55
29.06 984.09 29.56 1001.02 30.06 1017.95 30.56 1034.88
29.07 984.43 29.57 1001.36 30.07 1018.29 30.57 1035.22
29.08 984.77 29.58 1001.70 30.08 1018.63 30.58 1035.56
29.09 985.10 29.59 1002.04 30.09 1018.97 30.59 1035.90
29.10 985.44 29.60 1002.37 30.10 1019.31 30.60 1036.24
29.11 985.78 29.61 1002.71 30.11 1019.65 30.61 1036.58
29.12 986.12 29.62 1003.05 30.12 1019.98 30.62 1036.92
29.13 986.46 29.63 1003.39 30.13 1020.32 30.63 1037.25
29.14 986.80 29.64 1003.73 30.14 1020.66 30.64 1037.59
29.15 987.14 29.65 1004.07 30.15 1021.00 30.65 1037.93
29.16 987.47 29.66 1004.41 30.16 1021.34 30.66 1038.27
29.17 987.81 29.67 1004.74 30.17 1021.68 30.67 1038.61
29.18 988.15 29.68 1005.08 30.18 1022.02 30.68 1038.95
29.19 988.49 29.69 1005.42 30.19 1022.35 30.69 1039.29
29.20 988.83 29.70 1005.76 30.20 1022.69 30.70 1039.62
29.21 989.17 29.71 1006.10 30.21 1023.03 30.71 1039.96
29.22 989.51 29.72 1006.44 30.22 1023.37 30.72 1040.30
29.23 989.84 29.73 1006.78 30.23 1023.71 30.73 1040.64
29.24 990.18 29.74 1007.12 30.24 1024.05 30.74 1040.98
29.25 990.52 29.75 1007.45 30.25 1024.39 30.75 1041.32
29.26 990.86 29.76 1007.79 30.26 1024.72 30.76 1041.66
29.27 991.20 29.77 1008.13 30.27 1025.06 30.77 1042.00
29.28 991.54 29.78 1008.47 30.28 1025.40 30.78 1042.33
29.29 991.88 29.79 1008.81 30.29 1025.74 30.79 1042.67
29.30 992.22 29.80 1009.15 30.30 1026.08 30.80 1043.01
29.31 992.55 29.81 1009.49 30.31 1026.42 30.81 1043.35
29.32 992.89 29.82 1009.82 30.32 1026.76 30.82 1043.69
29.33 993.23 29.83 1010.16 30.33 1027.10 30.83 1044.03
29.34 993.57 29.84 1010.50 30.34 1027.43 30.84 1044.37
29.35 993.91 29.85 1010.84 30.35 1027.77 30.85 1044.70
29.36 994.25 29.86 1011.18 30.36 1028.11 30.86 1045.04
29.37 994.59 29.87 1011.52 30.37 1028.45 30.87 1045.38
29.38 994.92 29.88 1011.86 30.38 1028.79 30.88 1045.72
29.39 995.26 29.89 1012.19 30.39 1029.13 30.89 1046.06
29.40 995.60 29.90 1012.53 30.40 1029.47 30.90 1046.40
29.41 995.94 29.91 1012.87 30.41 1029.80 30.91 1046.74
29.42 996.28 29.92 1013.21 30.42 1030.14 30.92 1047.07
29.43 996.62 29.93 1013.55 30.43 1030.48 30.93 1047.41
29.44 996.96 29.94 1013.89 30.44 1030.82 30.94 1047.75
29.45 997.29 29.95 1014.23 30.45 1031.16 30.95 1048.09
29.46 997.63 29.96 1014.57 30.46 1031.50 30.96 1048.43
29.47 997.97 29.97 1014.90 30.47 1031.84 30.97 1048.77
29.48 998.31 29.98 1015.24 30.48 1032.17 30.98 1049.11
29.49 998.65 29.99 1015.58 30.49 1032.51 30.99 1049.45
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Millibars
to Inches of Mercury (Hg) Conversion Chart
Mb In Hg Mb In Hg Mb In Hg Mb In Hg
980.00 28.94 1000.00 29.53 1020.00 30.12 1040.00 30.71
980.33 28.95 1000.33 29.54 1020.33 30.13 1040.33 30.72
980.67 28.96 1000.67 29.55 1020.67 30.14 1040.67 30.73
981.00 28.97 1001.00 29.56 1021.00 30.15 1041.00 30.74
981.33 28.98 1001.33 29.57 1021.33 30.16 1041.33 30.75
981.67 28.99 1001.67 29.58 1021.67 30.17 1041.67 30.76
982.00 29.00 1002.00 29.59 1022.00 30.18 1042.00 30.77
982.33 29.01 1002.33 29.60 1022.33 30.19 1042.33 30.78
982.67 29.02 1002.67 29.61 1022.67 30.20 1042.67 30.79
983.00 29.03 1003.00 29.62 1023.00 30.21 1043.00 30.80
983.33 29.04 1003.33 29.63 1023.33 30.22 1043.33 30.81
983.67 29.05 1003.67 29.64 1023.67 30.23 1043.67 30.82
984.00 29.06 1004.00 29.65 1024.00 30.24 1044.00 30.83
984.33 29.07 1004.33 29.66 1024.33 30.25 1044.33 30.84
984.67 29.08 1004.67 29.67 1024.67 30.26 1044.67 30.85
985.00 29.09 1005.00 29.68 1025.00 30.27 1045.00 30.86
985.33 29.10 1005.33 29.69 1025.33 30.28 1045.33 30.87
985.67 29.11 1005.67 29.70 1025.67 30.29 1045.67 30.88
986.00 29.12 1006.00 29.71 1026.00 30.30 1046.00 30.89
986.33 29.13 1006.33 29.72 1026.33 30.31 1046.33 30.90
986.67 29.14 1006.67 29.73 1026.67 30.32 1046.67 30.91
987.00 29.15 1007.00 29.74 1027.00 30.33 1047.00 30.92
987.33 29.16 1007.33 29.75 1027.33 30.34 1047.33 30.93
987.67 29.17 1007.67 29.76 1027.67 30.35 1047.67 30.94
988.00 29.18 1008.00 29.77 1028.00 30.36 1048.00 30.95
988.33 29.19 1008.33 29.78 1028.33 30.37 1048.33 30.96
988.67 29.20 1008.67 29.79 1028.67 30.38 1048.67 30.97
989.00 29.21 1009.00 29.80 1029.00 30.39 1049.00 30.98
989.33 29.21 1009.33 29.81 1029.33 30.40 1049.33 30.99
989.67 29.22 1009.67 29.82 1029.67 30.41 1049.67 31.00
990.00 29.23 1010.00 29.83 1030.00 30.42 1050.00 31.01
990.33 29.24 1010.33 29.84 1030.33 30.43 1050.33 31.02
990.67 29.25 1010.67 29.84 1030.67 30.44 1050.67 31.03
991.00 29.26 1011.00 29.85 1031.00 30.45 1051.00 31.04
991.33 29.27 1011.33 29.86 1031.33 30.46 1051.33 31.05
991.67 29.28 1011.67 29.87 1031.67 30.46 1051.67 31.06
992.00 29.29 1012.00 29.88 1032.00 30.47 1052.00 31.07
992.33 29.30 1012.33 29.89 1032.33 30.48 1052.33 31.08
992.67 29.31 1012.67 29.90 1032.67 30.49 1052.67 31.09
993.00 29.32 1013.00 29.91 1033.00 30.50 1053.00 31.09
993.33 29.33 1013.33 29.92 1033.33 30.51 1053.33 31.10
993.67 29.34 1013.67 29.93 1033.67 30.52 1053.67 31.11
994.00 29.35 1014.00 29.94 1034.00 30.53 1054.00 31.12
994.33 29.36 1014.33 29.95 1034.33 30.54 1054.33 31.13
994.67 29.37 1014.67 29.96 1034.67 30.55 1054.67 31.14
995.00 29.38 1015.00 29.97 1035.00 30.56 1055.00 31.15
995.33 29.39 1015.33 29.98 1035.33 30.57 1055.33 31.16
995.67 29.40 1015.67 29.99 1035.67 30.58 1055.67 31.17
996.00 29.41 1016.00 30.00 1036.00 30.59 1056.00 31.18
996.33 29.42 1016.33 30.01 1036.33 30.60 1056.33 31.19
996.67 29.43 1016.67 30.02 1036.67 30.61 1056.67 31.20
997.00 29.44 1017.00 30.03 1037.00 30.62 1057.00 31.21
997.33 29.45 1017.33 30.04 1037.33 30.63 1057.33 31.22
997.67 29.46 1017.67 30.05 1037.67 30.64 1057.67 31.23
998.00 29.47 1018.00 30.06 1038.00 30.65 1058.00 31.24
998.33 29.48 1018.33 30.07 1038.33 30.66 1058.33 31.25
998.67 29.49 1018.67 30.08 1038.67 30.67 1058.67 31.26
999.00 29.50 1019.00 30.09 1039.00 30.68 1059.00 31.27
999.33 29.51 1019.33 30.10 1039.33 30.69 1059.33 31.28
999.67 29.52 1019.67 30.11 1039.67 30.70 1059.67 31.29
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MPH
to Knots to Meters Per Second Conversion
Chart
MPH Kts m/sec MPH Kts m/sec
1 0.9 0.4 51 44.3 22.8
2 1.7 0.9 52 45.2 23.2
3 2.6 1.3 53 46.1 23.7
4 3.5 1.8 54 46.9 24.1
5 4.3 2.2 55 47.8 24.6
6 5.2 2.7 56 48.7 25.0
7 6.1 3.1 57 49.5 25.5
8 7.0 3.6 58 50.4 25.9
9 7.8 4.0 59 51.3 26.4
10 8.7 4.5 60 52.1 26.8
11 9.6 4.9 61 53.0 27.3
12 10.4 5.4 62 53.9 27.7
13 11.3 5.8 63 54.7 28.2
14 12.2 6.3 64 55.6 28.6
15 13.0 6.7 65 56.5 29.1
16 13.9 7.2 66 57.4 29.5
17 14.8 7.6 67 58.2 30.0
18 15.6 8.0 68 59.1 30.4
19 16.5 8.5 69 60.0 30.8
20 17.4 8.9 70 60.8 31.3
21 18.2 9.4 71 61.7 31.7
22 19.1 9.8 72 62.6 32.2
23 20.0 10.3 73 63.4 32.6
24 20.9 10.7 74 64.3 33.1
25 21.7 11.2 75 65.2 33.5
26 22.6 11.6 76 66.0 34.0
27 23.5 12.1 77 66.9 34.4
28 24.3 12.5 78 67.8 34.9
29 25.2 13.0 79 68.6 35.3
30 26.1 13.4 80 69.5 35.8
31 26.9 13.9 81 70.4 36.2
32 27.8 14.3 82 71.3 36.7
33 28.7 14.8 83 72.1 37.1
34 29.5 15.2 84 73.0 37.6
35 30.4 15.6 85 73.9 38.0
36 31.3 16.1 86 74.7 38.4
37 32.2 16.5 87 75.6 38.9
38 33.0 17.0 88 76.5 39.3
39 33.9 17.4 89 77.3 39.8
40 34.8 17.9 90 78.2 40.2
41 35.6 18.3 91 79.1 40.7
42 36.5 18.8 92 79.9 41.1
43 37.4 19.2 93 80.8 41.6
44 38.2 19.7 94 81.7 42.0
45 39.1 20.1 95 82.6 42.5
46 40.0 20.6 96 83.4 42.9
47 40.8 21.0 97 84.3 43.4
48 41.7 21.5 98 85.2 43.8
49 42.6 21.9 99 86.0 44.3
50 43.4 22.4 100 86.9 44.7
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Knots
to MPH to Meters Per Second Conversion Chart
Knots MPH m/sec Knots MPH m/sec
1 1.2 0.5 51 58.7 26.3
2 2.3 1.0 52 59.8 26.8
3 3.5 1.5 53 61.0 27.3
4 4.6 2.1 54 62.1 27.8
5 5.8 2.6 55 63.3 28.3
6 6.9 3.1 56 64.4 28.8
7 8.1 3.6 57 65.6 29.3
8 9.2 4.1 58 66.7 29.9
9 10.4 4.6 59 67.9 30.4
10 11.5 5.1 60 69.0 30.9
11 12.7 5.7 61 70.2 31.4
12 13.8 6.2 62 71.3 31.9
13 15.0 6.7 63 72.5 32.4
14 16.1 7.2 64 73.7 32.9
15 17.3 7.7 65 74.8 33.5
16 18.4 8.2 66 76.0 34.0
17 19.6 8.8 67 77.1 34.5
18 20.7 9.3 68 78.3 35.0
19 21.9 9.8 69 79.4 35.5
20 23.0 10.3 70 80.6 36.0
21 24.2 10.8 71 81.7 36.6
22 25.3 11.3 72 82.9 37.1
23 26.5 11.8 73 84.0 37.6
24 27.6 12.4 74 85.2 38.1
25 28.8 12.9 75 86.3 38.6
26 29.9 13.4 76 87.5 39.1
27 31.1 13.9 77 88.6 39.6
28 32.2 14.4 78 89.8 40.2
29 33.4 14.9 79 90.9 40.7
30 34.5 15.4 80 92.1 41.2
31 35.7 16.0 81 93.2 41.7
32 36.8 16.5 82 94.4 42.2
33 38.0 17.0 83 95.5 42.7
34 39.1 17.5 84 96.7 43.2
35 40.3 18.0 85 97.8 43.8
36 41.4 18.5 86 99.0 44.3
37 42.6 19.0 87 100.1 44.8
38 43.7 19.6 88 101.3 45.3
39 44.9 20.1 89 102.4 45.8
40 46.0 20.6 90 103.6 46.3
41 47.2 21.1 91 104.7 46.8
42 48.3 21.6 92 105.9 47.4
43 49.5 22.1 93 107.0 47.9
44 50.6 22.7 94 108.2 48.4
45 51.8 23.2 95 109.3 48.9
46 52.9 23.7 96 110.5 49.4
47 54.1 24.2 97 111.6 49.9
48 55.2 24.7 98 112.8 50.4
49 56.4 25.2 99 113.9 51.0
50 57.5 25.7 100 115.1 51.5
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Values
in a Standard Atmosphere
Elevation Temperature Pressure
(feet) (degrees °C) (Mb)
0 15.0 1013
500 14.0 995
1,000 13.0 977
1,500 12.0 959
2,000 11.0 942
2,500 10.0 925
3,000 9.1 908
3,500 8.1 891
4,000 7.1 875
4,500 6.1 859
5,000 5.1 843
5,500 4.1 827
6,000 3.1 812
6,500 2.1 797
7,000 1.1 782
7,500 0.1 767
8,000 -0.9 752
8,500 -1.8 738
9,000 -2.8 724
9,500 -3.8 710
10,000 -4.8 697
10,500 -5.8 683
11,000 -6.8 670
11,500 -7.8 657
12,000 -8.8 644
12,500 -9.8 632
13,000 -10.8 619
13,500 -11.8 607
14,000 -12.7 595
14,500 -13.7 583
15,000 -14.7 572
15,500 -15.7 560
16,000 -16.7 549
16,500 -17.7 538
17,000 -18.7 527
17,500 -19.7 516
18,000 -20.7 506
18,500 -21.7 495
19,000 -22.7 485
19,500 -23.6 475
20,000 -24.6 465
20,500 -25.6 456
21,000 -26.6 446
21,500 -27.6 437
22,000 -28.6 428
22,500 -29.6 419
23,000 -30.6 410
23,500 -31.6 401
24,000 -32.6 392
24,500 -33.6 384
25,000 -34.5 376
25,500 -35.5 368
26,000 -36.5 360
26,500 -37.5 352
27,000 -38.5 344
27,500 -39.5 336
28,000 -40.5 329
28,500 -41.5 322
29,000 -42.5 315
29,500 -43.5 307
30,000 -44.5 301
30,500 -45.4 294
31,000 -46.4 287
31,500 -47.4 281
32,000 -48.4 274
32,500 -49.4 268
33,000 -50.4 262
33,500 -51.4 256
34,000 -52.4 250
34,500 -53.4 244
35,000 -54.4 238
35,500 -55.4 232
36,000 -56.3 225
36,500 -57.3 219
37,000 -58.3 213
37,500 -59.3 207
38,000 -60.3 200
38,500 -61.3 194
39,000 -62.3 188
39,500 -63.3 182
40,000 -64.3 176
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