 |
Standard Conversion Table |
| To convert from: | To: | Multiply By: | To convert from: | To: | Multiply 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(BTUH) | K Calorie (kcal) | .252 |
| Area | Tons (reif. effect) | Kilowatt (refrig. effect) | 3.516 | ||
| Square Feet (ft²) | square meter (m²) | .093 | Tons (reif 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/second (m³/s) | .0283 | Feet of water (ftH2O) | Pascal (PA) | 2990 |
| Cubic Inches (In³) | Cubic mm (mm³) | 16387 | Inches of water (inH2O) | Pascals (PA) | 249 |
| Gallons (gal) | litres (l) | 3.785 | Pounds per square inch (PSI) | Pascals (PA) | 6895 |
| Galons (gal) | cubic meters (m³) | .003785 | PSI | Bar or KG/CM² | 6.895 x 10² |
| 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) | Kilograms (kg) | .4536 |
| Gallons/minute (GPM) | cubic meters/hr (m³/hr) | .2271 | Fouling factors for heat exchangers | ||
| Gallons/minute (GPM) | litres/second (l/s) | .06308 | .00075 ft²° F hr/BTU | = .132 m²° K/kW | |
| Velocity | .00025 ft²° F hr/BTU | = .044 m²° 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 - Centrigrade (°C) Versus
Fahrenheit (°F)
Note: The centre columns of numbers, referred to as BASE TEMP., is the
temperature in either degrees Fahrenheit (°F) or Centigrade (° C) , whichever is desired
to convert into the other. If degrees Centigrade is given, read dgrees Farrenheit to the
right. If degrees Fahrenheit is given, read degrees Centigrade to the left.
| Temperature | Temperature | Temperature | ||||||||
| °C | C or F | °F | °C | C or F | °F | °C | C or F | °F | ||
| - 40.0 | - 40 | - 40.0 | -15.0 | +5 | +41.0 | +10.0 | +50 | +122.0 | ||
| - 39.4 | -39 | - 38.2 | - 14.4 | +6 | +42.8 | +10.6 | +51 | +123.8 | ||
| -38.9 | -38 | -36.4 | -13.9 | +7 | + 44.6 | + 11.1 | + 52 | + 125.6 | ||
| -38.3 | -37 | -34.6 | -13.3 | +8 | +46.4 | +11.7 | +53 | +127.4 | ||
| -37.8 | -36 | -32.8 | -12.8 | +9 | + 48.2 | +12.2 | +54 | +129.2 | ||
| -37.2 | -35 | -31.0 | -12.2 | +10 | +50.0 | +12.8 | +55 | +131.0 | ||
| -36.7 | -34 | -29.2 | -11.7 | +11 | +51.8 | +13.3 | +56 | +132.8 | ||
| -36.1 | -33 | -27.4 | -11.1 | +12 | +53.6 | +13.9 | +57 | +134.6 | ||
| -35.6 | -32 | -25.6 | -10.6 | +13 | +55.4 | +14.4 | +58 | +136.4 | ||
| -35.0 | -31 | -23.8 | -10.0 | +14 | +57.2 | +15.0 | +59 | +138.2 | ||
| -34.4 | -30 | -22.0 | -9.4 | +15 | +59.0 | +15.6 | +60 | +140.0 | ||
| -33.9 | -29 | -20.2 | -8.9 | +16 | +60.8 | +16.1 | +61 | +141.8 | ||
| -33.3 | -28 | -18.4 | -8.3 | +17 | +62.6 | +16.7 | +62 | +143.6 | ||
| -32.8 | -27 | -16.6 | -7.8 | +18 | +64.4 | +17.2 | +63 | +145.4 | ||
| -32.2 | -26 | -14.8 | -7.2 | +19 | +66.2 | +17.8 | +64 | +147.2 | ||
| -31.7 | -25 | -13.0 | -6.7 | +20 | +68.0 | +18.3 | +65 | +149.0 | ||
| -31.1 | -24 | -11.2 | -6.1 | +21 | +69.8 | +18.9 | +66 | +150.8 | ||
| -30.6 | -23 | -9.4 | -5.5 | +22 | +71.6 | +19.4 | +67 | +152.6 | ||
| -30.0 | -22 | -7.6 | -5.0 | +23 | +73.4 | 20.0 | +68 | +154.4 | ||
| -29.4 | -21 | -5.8 | -4.4 | +24 | +75.2 | +20.6 | +69 | +156.2 | ||
| -28.9 | -20 | -4.0 | -3.9 | +25 | +77.0 | +21.1 | +70 | +158.0 | ||
| -28.3 | -19 | -2.2 | -3.3 | +26 | +78.8 | +21.7 | +71 | +159.8 | ||
| -27.8 | -18 | -0.4 | -2.8 | +27 | +80.6 | +22.2 | +72 | +161.6 | ||
| -27.2 | -17 | +1.4 | -2.2 | +28 | +82.4 | +22.8 | +73 | +163.4 | ||
| -26.7 | -16 | +3.2 | -1.7 | +29 | +84.2 | +23.3 | +74 | +165.2 | ||
| -26.1 | -15 | +5.0 | -1.1 | +30 | +86.0 | +23.9 | +75 | +167.0 | ||
| -25.6 | -14 | +6.8 | -0.6 | +31 | +87.8 | +24.4 | +76 | +168.8 | ||
| -25.0 | -13 | +8.6 | .0 | +32 | +89.6 | +25.0 | +77 | +170.6 | ||
| -24.4 | -12 | +10.4 | +0.6 | +33 | +91.4 | +25.6 | +78 | +172.4 | ||
| -23.9 | -11 | -12.2 | +1.1 | +34 | +93.2 | +26.1 | +79 | +174.2 | ||
| -23.3 | -10 | +14.0 | +1.7 | +35 | +95.0 | +26.7 | +80 | +176.0 | ||
| -22.8 | -9 | +15.8 | +2.2 | +36 | +96.8 | +27.2 | +81 | +177.8 | ||
| -22.2 | -8 | +17.6 | +2.8 | +37 | +98.6 | +27.8 | +82 | +179.6 | ||
| -21.7 | -7 | +19.4 | +3.3 | +38 | +100.4 | +28.3 | +83 | +181.4 | ||
| -21.1 | -6 | +21.2 | +3.9 | +39 | +102.2 | +28.9 | +84 | +183.2 | ||
| -20.6 | -5 | +23.0 | +4.4 | +40 | +104.0 | +29.4 | +85 | +185.0 | ||
| -20.0 | -4 | +24.8 | +5.0 | +41 | +105.8 | +30.0 | +86 | +186.8 | ||
| -19.4 | -3 | +26.6 | +5.5 | +42 | +107.6 | +30.6 | +87 | +188.6 | ||
| -18.9 | -2 | +28.4 | +6.1 | +43 | +109.4 | +31.1 | +88 | +199.4 | ||
| -18.3 | -1 | +30.2 | +6.7 | +44 | +111.2 | +31.7 | +89 | +192.2 | ||
| -17.8 | 0 | +32.0 | +7.2 | +45 | +113.0 | +32.2 | +90 | +194.0 | ||
| -17.2 | +1 | +33.8 | +7.8 | +46 | +114.8 | +32.8 | +91 | +195.8 | ||
| -16.7 | +2 | +35.6 | +8.3 | +47 | +116.6 | +33.3 | +92 | +197.6 | ||
| -16.1 | +3 | +37.4 | +8.9 | +48 | +118.4 | +33.9 | +93 | +199.4 | ||
| -15.6 | +4 | +39.2 | +9.4 | +49 | +120.2 | +34.4 | +94 | +201.2 | ||
| Temperature | Temperature | |||||
| °C | C or F | °F | °C | C or F | °F | |
| +35.0 | +95 | +203.0 | +60.0 | +140 | +284.0 | |
| +35.6 | +96 | +204.8 | +60.6 | +141 | +285.8 | |
| +36.1 | +97 | +206.6 | +61.1 | +142 | +287.6 | |
| +36.7 | +98 | +208.4 | +61.7 | +143 | +289.4 | |
| +37.2 | +99 | +210.2 | +62.2 | +144 | +291.2 | |
| +37.8 | +100 | +212.0 | +62.8 | +145 | +293.0 | |
| +38.3 | +101 | +213.8 | +63.3 | +146 | +294.8 | |
| +38.9 | +102 | +215.6 | +63.9 | +147 | +296.6 | |
| +39.4 | +103 | +217.4 | +64.4 | +148 | +298.4 | |
| +40.0 | +104 | +219.2 | +65.0 | +149 | +300.2 | |
| +40.6 | +105 | +221.0 | +65.6 | +150 | +302.0 | |
| +41.1 | +106 | +222.8 | +66.1 | +151 | +303.8 | |
| +41.7 | +107 | +224.6 | +66.7 | +152 | +305.6 | |
| +42.2 | +108 | +226.4 | +67.2 | +153 | +307.4 | |
| +42.8 | +109 | +228.2 | +67.8 | +154 | +309.2 | |
| +43.3 | +110 | +230.0 | +68.3 | +155 | +311.0 | |
| +43.9 | +111 | +231.8 | +68.9 | +156 | +312.8 | |
| +44.4 | +112 | +233.6 | +69.4 | +157 | +314.6 | |
| +45.0 | +113 | +235.4 | +70.0 | +158 | +316.4 | |
| +45.6 | +114 | +237.2 | +70.6 | +159 | +318.2 | |
| +46.1 | +115 | +239.0 | +71.1 | +160 | +320.0 | |
| +46.7 | +116 | +240.8 | +71.7 | +161 | +321.8 | |
| +47.2 | +117 | +242.6 | +72.2 | +162 | +323.6 | |
| +47.8 | +118 | +244.4 | +72.8 | +163 | +325.4 | |
| +48.3 | +119 | +246.2 | +73.3 | +164 | +327.2 | |
| +48.9 | +120 | +248.0 | +73.9 | +165 | +329.0 | |
| +49.4 | +121 | +249.8 | +74.4 | +166 | +330.8 | |
| +50.0 | +122 | +251.6 | +75.0 | +167 | +332.6 | |
| +50.6 | +123 | +253.4 | +75.6 | +168 | +334.4 | |
| +51.1 | +124 | +255.2 | +76.1 | +169 | +336.2 | |
| +51.7 | +125 | +257.0 | +76.7 | +170 | +338.0 | |
| +52.2 | +126 | +258.8 | +77.2 | +171 | +339.8 | |
| +52.8 | +127 | +260.6 | +77.8 | +172 | +341.6 | |
| +53.3 | +128 | +262.4 | +78.3 | +173 | +343.4 | |
| +53.9 | +129 | +264.2 | +78.9 | +174 | +345.2 | |
| +54.4 | +130 | +266.0 | +79.4 | +175 | +347.0 | |
| +55.0 | +131 | +267.8 | +80.0 | +176 | +348.8 | |
| +55.6 | +132 | +269.6 | +80.6 | +177 | +350.6 | |
| +56.1 | +133 | +271.4 | +81.1 | +178 | +352.4 | |
| +56.7 | +134 | +273.2 | +81.7 | +179 | +354.2 | |
| +57.2 | +135 | +275.0 | +82.2 | +180 | +356.0 | |
| +57.8 | +136 | +276.8 | +82.8 | +181 | +357.8 | |
| +58.3 | +137 | +278.6 | +83.3 | +182 | +359.6 | |
| +58.9 | +138 | +280.4 | +83.9 | +183 | +361.4 | |
| +59.4 | +139 | +282.2 | +84.4 | +184 | +363.2 | |
FOR INTERPOLATION IN THE ABOVE TABLE USE: |
||||||||||
| BASE TEMPERATURE (°F OR °C): | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| DEGREES CENTIGRADE | 0.56 | 1.11 | 1.67 | 2.22 | 2.78 | 3.33 | 3.89 | 4.44 | 5.00 | 5.56 |
| DEGREES FAHRENHEIT: | 1.8 | 3.6 | 5.4 | 7.2 | 9.0 | 10.8 | 12.6 | 14.4 | 16.2 | 18.0 |