Standard Conversion Table

 

To Convert From To
 Muftiply By
 To Convert From To
 Muftiply By
Length Energy and Power and Capacity
Feet (ft) meters (m) .30481 British Thermal Units (BTUH) Kilowatt (kW) 000293
Inches (In) millimeters (mm) 25.4 British Thermal Units (BTU) KCalorie (Kcal) 252
Area Kilowatt (refrig. effect) Tons (refrig. effect) 3.516
Square Feet (ft2) square meters(m2) .093 Tons (refrig. effect) Kilocalories per hour (Kcal/hr) 3024
Square Inches (In2) square millimeters (mm2) 645.2 Horsepower Kilowatt (kW) .7457
Volume Pressure
Cubic Feet (ft3) Cubic meters (m3) .0283 Feet of water (ftH2O) Pascals (PA) 2990
Cubic Inches (in3) Cubic mm (mm3) 16387 Inches of water (inH20) Pascals (PA) 249
Gallons (gal) litres (l) 3.785 Pounds per square inch (PSI) Pascals (PA) 6895
Gallons (gal) cubic meters (m3) .003785 PSI Bar or KG/C 6.895 x 10- 2
Flow Weight
Cubic feet/min (cfm) cubic meters/second (m3/s) .000472 Ounces (oz) Kilograms (kg) .02835
Cubic feet/min (cfm) cubic meters/hr (M3 /hr) 1.69884 Pounds (lbs) .4536
Gallons/minute (GPM) cubic meters/hr (M3 /hr) .2271 Fouling factors for heat exchangers
Gallons/minute (GPM) litres/second (l/s) .06308 .00075 ft' OF hr/BTU =.1 32 m2 o K/kW
Velocity .00025 ft' IF hr/BTU =.044 m2o K/kW
Feet per minute (ft/m) meters per second (m/s) .00508
Feet per second (ft/s) meters per second (m/s) .3048

 

Temperature

 Temperature
ºC C or F ºF ºC C or F ºF
- 40.0 - 40 - 40.0 - 15.0 + 5 + 41.0
39.4 - 9 - 38.2 - 14.4 + 6 + 42.8
38.9 38 36.4 13.9 + 7 + 44.6
- 38.3 - 37 34.6 13.3 + 8 + 46.4
- 37.8 - 36 - 32.8 - 12.8 + 9 + 48.2
 
37.2 - 35 - 31.0 - 12.2 + 10 + 50.0
- 36.7 - 34 - 29.2 11.7 + 11 + 51.8
- 36.1 - 33 - 27.4 - 11.1 + 12 + 53.6
- 35.6 32 25.6 - 10.6 + 13 + 55.4
- 35.0 - 31 - 23.8 - 10.0 + 14 + 57.2
 
34.4 - 30 22.0 - 9.4 + 15 + 59.0
33.9 - 29 20.2 8.9 + 16 + 60.8
33.3 28 - 18.4 - 8.3 + 17 + 62.6
- 32.8 - 27 - 16.6 7.8 + 18 + 64.4
32.2 - 26 14.8 - 7.2 + 19 + 66.2
 
31.7 - 25 - 13.0 - 6.7 + 20 + 68.0
31.1 - 24 11.2 6.1 + 21 + 69.8
- 30.6 23 - 9.4 - 5.5 + 22 + 71.6
- 30.0 - 22 - 7.6 5.0 + 23 + 73.4
- 29.4 - 21 - 5.8 4.4 + 24 + 75.2
 
- 28.9 20 - 4.0 - 3.9 + 25 + 77.0
- 28.3 19 - 2.2 - 3.3 + 26 + 78.8
27.8 - 18 0.4 - 2.8 + 27 + 80.6
- 27.2 - 17 + 1.4 2.2 + 28 + 82.4
- 26.7 - 16 + 3.2 - 1.7 + 29 + 84.2
 
- 26.1 - 15 + 5.0 - 1.1 + 30 + B6.0
- 25.6 14 + 6.8 - 0.6 + 31 + 87.8
- 25.0 - 13 + 8.6 .0 + 32 + 89.6
- 24.4 - 12 + 10.4 + 0.6 + 33 + 91.4
23.9 11 + 12.2 + 1.1 + 34 + 93.2
 
23.3 - 10 + 14.0 + 1.7 + 35 + 95.0
22.8 9 + 15.8 + 2.2 + 36 + 96.8
22.2 8 + 17.6 + 2.8 + 37 + 98.6
- 21.7 7 + 19.4 + 3.3 + 38 + 100.4
- 21.1 6 + 21.2 + 3.9 + 39 + 102.2
 
20.6 5 + 23.0 + 4.4 + 40 + 104.0
20.0 - 4 + 24.8 + 5.0 + 41 + 105.8
19.4 - 3 + 26.6 + 5.5 + 42 + 107.6
18.9 - 2 + 28.4 + 6.1 + 43 + 109.4
18.3 - 1 + 30.2 + 6.7 + 44 + 111.2
   
- 17.8 0 + 32.0 + 7.2 + 45 + 113.0
- 17.2 + 1 + 33.8 + 7.8 + 46 + 114.8
16.7 + 2 + 35.6 + 8.3 + 47 + 116.6
16.1 + 3 + 37.4 + 8.9 + 48 + 118.4
- 15.6 + 4 + 39.2 + 9.4 + 49 + 120.2

                                                                                                                    

Temperature Temperature Temperature
ºC C or F ºF ºC C or F ºF ºC C or F ºF
+ 10.0 + 50 + 122.0 + 35.0 + 95 + 203.0 + 60.0 + 140 + 284.0
+ 10.6 + 51 + 123.8 + 35.6 + 96 + 2G4.8 + 60.6 + 141 + 285.8
+ 11.1 + 52 + 125.6 + 36.1 + 97 + 206.6 + 61.1 + 142 + 287.6
+ 11.7 + 53 + 127.4 + 36.7 + 98 + 208.4 + 61.7 + 143 + 289.4
+ 12.2 + 54 + 129.2 + 37.2 + 99 + 210.2 + 62.2 + 144 + 291.2
 
+ 12.8 + 55 + 131.0 + 37.8 + 100 + 212.0 + 62.8 + 145 + 293.0
+ 13.3 + 56 + 132.8 + 38.3 + 101 + 213.8 + 63.3 + 146 + 294.8
+ 13.9 + 57 + 134.6 + 38.9 + 102 + 215.6 + 63.9 + 147 + 296.6
+ 14.4 + 58 + 136.4 + 39.4 + 103 + 217.4 + 64.4 + 148 + 298.4
+ 15.0 + 59 + 138.2 + 40.0 + 104 + 219.2 + 65.0 + 149 + 300.2
 
+ 15.6 + 60 + 140.0 + 40.6 + 105 + 221.0 + 65.6 + 150 + 302.0
+ 16.1 + 61 + 141.8 + 41.1 + 106 + 222.8 + 66.1 + 151 + 303.8
+ 16.7 + 62 + 143.6 + 41.7 + 107 + 224.6 + 66.7 + 152 + 305.6
+ 17.2 + 63 + 145.4 + 42.2 + 108 + 226.4 + 67.2 + 153 + 307.4
+ 17.8 + 64 + 147.2 + 42.8 + 109 + 228.2 + 67.8 + 154 + 309.2
 
+ 18.3 + 65 + 149.0 + 43.3 + 110 + 230.0 + 68.3 + 155 + 311.0
+ 18.9 + 66 + 150.8 + 43.9 +111 + 231.8 + 68.9 + 156 + 312.8
+ 19.4 + 67 + 152.6 + 44.4 + 112 + 233.6 + 69.4 + 157 + 314.6
+ 20.0 + 68 + 154.4 + 45.0 + 113 + 235.4 + 70.0 + 158 + 316.4
+ 20.6 + 69 + 156.2 + 45.6 + 114 + 237.2 + 70.6 + 159 + 318.2
 
+ 21.1 + 70 + 158.0 + 46.1 + 115 + 239.0 + 71.1 + 160 + 320.0
+ 21.7 + 71 + 159.8 + 46.7 + 116 + 240.8 + 71.7 + 161 + 321.8
+ 22.2 + 72 + 161.6 + 47.2 + 117 + 242.6 + 72.2 + 162 + 323.6
+ 22.8 + 73 + 163.4 + 47.8 + 118 + 244.4 + 72.B + 163 + 325.4
+ 23.3 + 74 + 165.2 + 48.3 + 119 + 246.2 + 73.3 + 164 + 327.2
 
+ 23.9 + 75 + 167.0 + 48.9 + 120 + 248.0 + 73.9 + 165 + 329.0
+ 24.4 + 76 + 168.8 + 49.4 + 121 + 249.8 + 74.4 + 166 + 330.8
+ 25.0 + 77 + 170.6 + 50.0 + 122 + 251.6 + 75.0 + 167 + 332.6
+ 25.6 + 78 + 172.4 + 50.6 + 123 + 253.4 + 75.6 + 168 + 334.4
+ 26.1 + 79 + 174.2 + 51.1 + 124 + 255.2 + 76.1 + 169 + 336.2
 
+ 26.7 + 80 + 176.0 + 51.7 + 125 + 257.0 + 76.7 + 170 + 338.0
+ 27.2 + 81 + 177.8 + 52.2 + 126 + 258.8 + 77.2 + 171 + 339.8
+ 27.8 + 82 + 179.6 + 52.8 + 127 + 260.6 + 77.8 + 172 + 341.6
+ 28.3 + 83 + 181.4 + 53.3 + 128 + 262.4 + 78.3 + 173 + 343.4
+ 28.9 + 84 + 183.2 + 53.9 + 129 + 264.2 + 78.9 + 174 + 345.2
 
+ 29.4 + 85 + 185.0 + 54.4 + 130 + 266.0 + 79.4 + 175 + 347.0
+ 30.0 + 86 + 196.8 + 55.0 + 131 + 267.8 + 80.0 + 176 + 348.8
+ 30.6 + 87 + 188.6 + 55.6 + 132 + 269.6 + 80.6 + 177 + 350.6
+ 31.1 + 88 + 199.4 + 56.1 + 133 + 271.4 + 81.1 + 178 + 352.4
+ 31.7 + 89 + 192.2 + 56.7 + 134 + 273.2 + 81.7 + 179 + 354.2
 
+ 32.2 + 90 + 194.0 + 57.2 + 135 + 275.0 + 82.2 + 180 + 356.0
+ 32.B + 91 + 195.8 + 57.8 + 136 + 276.8 + 82.8 + 181 + 357.B
+ 33.3 + 92 + 197.6 + 58.3 + 137 + 278.6 + 83.3 + 182 + 359.6
+ 33.9 + 93 + 199.4 + 58.9 + 138 + 280.4 + 93.9 + 183 + 361.4
+ 34.4 + 94 + 201.2 + 59.4 + 139 + 282.2 + 84.4 + 184 + 363.2

FOR INTERPOLATION IN THE ABOVE TABLE USE:

BASETEMPERATURE(IForIC): 1 2 3 4 5 6 7 8 9 10
DEGREESCENTIGRADE: 0.56 1.11 1.67 2.22 2.78 3.33 3.89 4.44 5.00 5.56
DEGREESFAHRENHEIT. 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0