Welcome to the Weather Conversion Table. The links below will take you to the appropriate conversion. This table is an exact copy of the one at NWS with a couple of modifications.
Celsius to Farenheit Farenheit to Celsius Inches to mb mb to Inches MPH to Knots Knots to MPH Standard Atmosphere Table
Celsius to Fahrenheit Conversion C F C F C F C F 50 122.0 25 77.0 0 32.0 -25 -13.0 49 120.2 24 75.2 -1 30.2 -26 -14.8 48 118.4 23 73.4 -2 28.4 -27 -16.6 47 116.6 22 71.6 -3 26.6 -28 -18.4 46 114.8 21 69.8 -4 24.8 -29 -20.2 45 113.0 20 68.0 -5 23.0 -30 -22.0 44 111.2 19 66.2 -6 21.2 -31 -23.8 43 109.4 18 64.4 -7 19.4 -32 -25.6 42 107.6 17 62.6 -8 17.6 -33 -27.4 41 105.8 16 60.8 -9 15.8 -34 -29.2 40 104.0 15 59.0 -10 14.0 -35 -31.0 39 102.2 14 57.2 -11 12.2 -36 -32.8 38 100.4 13 55.4 -12 10.4 -37 -34.6 37 98.6 12 53.6 -13 8.6 -38 -36.4 36 96.8 11 51.8 -14 6.8 -39 -38.2 35 95.0 10 50.0 -15 5.0 -40 -40.0 34 93.2 9 48.2 -16 3.2 -41 -41.8 33 91.4 8 46.4 -17 1.4 -42 -43.6 32 89.6 7 44.6 -18 -0.4 -43 -45.4 31 87.8 6 42.8 -19 -2.2 -44 -47.2 30 86.0 5 41.0 -20 -4.0 -45 -49.0 29 84.2 4 39.2 -21 -5.8 -46 -50.8 28 82.4 3 37.4 -22 -7.6 -47 -52.6 27 80.6 2 35.6 -23 -9.4 -48 -54.4 26 78.8 1 33.8 -24 -11.2 -49 -56.2
Fahrenheit to Celsius Conversion F C F C F C F C 125 51.6 75 23.9 25 -3.9 -25 -31.6 124 51.1 74 23.3 24 -4.4 -26 -32.2 123 50.5 73 22.8 23 -5.0 -27 -32.7 122 50.0 72 22.2 22 -5.6 -28 -33.3 121 49.4 71 21.6 21 -6.1 -29 -33.9 120 48.8 70 21.1 20 -6.7 -30 -34.4 119 48.3 69 20.5 19 -7.2 -31 -35.0 118 47.7 68 20.0 18 -7.8 -32 -35.5 117 47.2 67 19.4 17 -8.3 -33 -36.1 116 46.6 66 18.9 16 -8.9 -34 -36.6 115 46.1 65 18.3 15 -9.4 -35 -37.2 114 45.5 64 17.8 14 -10.0 -36 -37.7 113 45.0 63 17.2 13 -10.5 -37 -38.3 112 44.4 62 16.7 12 -11.1 -38 -38.9 111 43.8 61 16.1 11 -11.7 -39 -39.4 110 43.3 60 15.5 10 -12.2 -40 -40.0 109 42.7 59 15.0 9 -12.8 -41 -40.5 108 42.2 58 14.4 8 -13.3 -42 -41.1 107 41.6 57 13.9 7 -13.9 -43 -41.6 106 41.1 56 13.3 6 -14.4 -44 -42.2 105 40.5 55 12.8 5 -15.0 -45 -42.7 104 40.0 54 12.2 4 -15.5 -46 -43.3 103 39.4 53 11.7 3 -16.1 -47 -43.8 102 38.9 52 11.1 2 -16.7 -48 -44.4 101 38.3 51 10.5 1 -17.2 -49 -45.0 100 37.7 50 10.0 0 -17.8 -50 -45.5 99 37.2 49 9.4 -1 -18.3 -51 -46.1 98 36.6 48 8.9 -2 -18.9 -52 -46.6 97 36.1 47 8.3 -3 -19.4 -53 -47.2 96 35.5 46 7.8 -4 -20.0 -54 -47.7 95 35.0 45 7.2 -5 -20.5 -55 -48.3 94 34.4 44 6.7 -6 -21.1 -56 -48.8 93 33.9 43 6.1 -7 -21.6 -57 -49.4 92 33.3 42 5.6 -8 -22.2 -58 -50.0 91 32.7 41 5.0 -9 -22.8 -59 -50.5 90 32.2 40 4.4 -10 -23.3 -60 -51.1 89 31.6 39 3.9 -11 -23.9 -61 -51.6 88 31.1 38 3.3 -12 -24.4 -62 -52.2 87 30.5 37 2.8 -13 -25.0 -63 -52.7 86 30.0 36 2.2 -14 -25.5 -64 -53.3 85 29.4 35 1.7 -15 -26.1 -65 -53.8 84 28.9 34 1.1 -16 -26.6 -66 -54.4 83 28.3 33 0.6 -17 -27.2 -67 -54.9 82 27.8 32 0.0 -18 -27.8 -68 -55.5 81 27.2 31 -0.6 -19 -28.3 -69 -56.1 80 26.6 30 -1.1 -20 -28.9 -70 -56.6 79 26.1 29 -1.7 -21 -29.4 -71 -57.2 78 25.5 28 -2.2 -22 -30.0 -72 -57.7 77 25.0 27 -2.8 -23 -30.5 -73 -58.3 76 24.4 26 -3.3 -24 -31.1 -74 -58.8
Inches Hg to Millibars Conversion 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
Millibars to Inches Hg Conversion 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
MPH to Knots or Meters/Sec Conversion 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
Knots to MPH or Meters/Sec Conversion Knots MPH m/sec Knots MPH m/sec 1 1.2 0.51 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
Standard Atmosphere (<36,000') Elev Deg C P 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
