Conversion Factors & Equivalents |
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| 1 Atmosphere | = | 760 | mm of mercury |
| 1 Atmosphere | = | 33.91 | ft of water (4°C) |
| 1 Atmosphere | = | 29.92 | in. of mercury (0°C) |
| 1 Atmosphere | = | 14.969 | psi |
| 1 Bar | = | 0.9869 | atmosphere |
| 1 British thermal unit | = | 777.6 | foot-lbs |
| 1 British thermal unit | = | 252.0 | gram-calories |
| 1 British thermal unit | = | 1054.8 | joules |
| 1 British thermal unit | = | 0.2930x10 | kilowatt hours |
| 1Btu\hr | = | 0.2930 | watts |
| 1 Btu\hr° ft² F deg | = | 2.0345x10°³ | watts/in ²F deg |
| = | 5.678x10 4 | watts/cm² °C | |
|
Celsius |
= | (1.8°C) + 32 | Fahrenheit |
| 1 Centimetre | = | 0.3937 | inches |
| 1 Centimetre of mercury (0°C) | = | 0.4460 | feet of water |
| = | 0.1934 | pounds/sq in. | |
| 1 Circular mil | = | 0.7854 | square mils |
| 1 Cubic centimetre | = | 0.06102 | cubic inches |
| 1 Cubic foot | = | 1728 | cubic inches |
| = | 0.02832 | cubic metres | |
| = | 28.32 | litres | |
| = | 7.481 | gallons | |
| 1 Cubic foot/min | = | 0.472 | litres/sec |
| 1 Cubic foot/sec | = | 448.8 | gallons/min |
| 1 Cubic inch | = | 16.387 | cubic cm |
| = | 0.016387 | litres | |
| 1 Cubic meter | = | 35.31 | cubic feet |
| = | 1.308 | cubic yards | |
| = | 264.2 | gallons | |
| = | 1000.0 | litres | |
| CFM x 0.000472 | = | m³/s | |
| 1 Erg | = | 1.0 | cm-dynes |
| Fahrenheit | = | (F - 32)\1.8 | Celsius |
| 1 Foot | = | 0.3048 | meters |
| 1 Foot of water (68 F) | = | 0.4335 | lb/sq in |
| 1 Foot\min | = | 0.01136 | miles/hr |
| 1 Foot - pound | = | 1.383 x 10 4 | cm-grams |
| = | 1.356 | joules | |
| FPM x | = | m/s | |
| 1 Gallon | = | 231.0 | cubic inches |
| = | 3.785 | litres | |
| = | 8.346 | lb of water (68 F) | |
| 1 Gram | = | 0.3527 | ounces (avdp) |
| = | 2.205 x 10°³ | pounds | |
| 1 Gram-calorie | = | 3.969 x 10°³ | Btu |
| = | 1.163 x 10°³ | watt-hours | |
| 1 Horsepower | = | 42.41 | Btu/min |
| = | 33 000 | ft-lb/min | |
| = | 550 | ft-lb/sec | |
| = | 0.7457 | kilowatts | |
| 1 Inch | = | 25.40 | milimetres |
| = | 1.133 | ft of water | |
| 1 Inch of mercury | = | 0.4912 | lb/sq in |
| = | 0.03453 | kg/sq cm | |
| 1 Inch of water (0°C) | = | 0.07361 | inches of mercury |
| = | 0.03613 | lb/sq in | |
| Inches WG x 250 | = | N/m² | |
| 1 Joule | = | 9.480 x 10 4 | Btu |
| = | 0.7376 | tf-lb | |
| = | 2.389 x 10 4 | kg-calories | |
| = | 2.778 x 10 4 | watt hours | |
| 1 Kilogram | = | 2.205 | pounds |
| 1 Kilogram/sq cm | = | 0.9678 | atmosphere |
| = | 32.81 | feet of water | |
| = | 28.96 | inches of mercury | |
| 1 Kilogram-calories | = | 3.969 | Btu |
| = | 3087 | ft-lb | |
| = | 4186 | joules | |
| 1 Kilometre | = | 3281 | feet |
| = | 0.6214 | miles | |
| 1 Kilometre/hr | = | 54.68 | feet/min |
| 1 Kilowatt | = | 56.89 | Btu/min |
| = | 1.341 | horsepower | |
| 1 Kilowatt-hr | = | 3413 | Btu |
| = | 3.6 x 10 6 | joules | |
| = | 860 | kilogram-calories | |
| 1 Meter | = | 3.281 | feet |
| = | 39.37 | inches | |
| = | 1.094 | yards | |
| 1 Mile (nautical) | = | 6080 | feet |
| 1 Mile (standard) | = | 5280 | feet |
| 1 Mile/hr | = | 88.0 | feet/min |
| 1 mm | = | 0.03937 | inches |
| = | 39.37 | miles | |
| 1 Newton / Sq meter | = | 1.0 | pascals |
| 1 Ounce | = | 28.35 | grams |
| = | 0.0625 | pounds | |
| 1 Pint (liquid) | = | 473.2 | cubic cm |
| = | 28.87 | cubic inches | |
| = | 0.4732 | litres | |
| 1 Pound | = | 7000 | grains |
| = | 453.6 | grains | |
| = | 4.448 | newtons | |
| = | 0.4536 | kg | |
| 1 sq cm | = | 0.1550 | sq inches |
| 1 sq foot | = | 144.0 | sq inches |
| = | 0.09290 | sq meters | |
| 1 sq inch | = | 6.452 | sq cm |
| = | 406 | sq mils | |
| 1 sq meter | = | 10.764 | sq feet |
| = | 1.1960 | sq yards | |
| 1 sq mm | = | 0.1550 | sq inches |
| 1 sq yard | = | 9.0 | sq feet |
| = | 0.8361 | sq meters | |
| TEMPERATURE: | |||
| Kelvin | = | Celsius + 273 | |
| Rankine | = | Fahrenheit + 460 | |
| 1 Ton (Long) | = | 1016 | kg |
| = | 2240 | pounds | |
| 1 Ton (Short) | = | 907.2 | kg |
| = | 2000 | pounds | |
| 1 Ton (Refrigeration) | = | 12 000 | Btu/hr |
| = | 3.517 | kilowatt-hr | |
| = | 12.65 | megajoules | |
| 1 Ton (Metric) | = | 1000 | kg |
| = | 2205 | pounds | |
| 1 Torr | = | 1.0 | mm hg |
| 1 Watt | = | 3.413 | Btu/hr |
| = | 0.8598 | kg-calories/hr | |
| 1 Watt-second | = | 1.0 | joule |
| = | 0.8598 | kg-calories/hr | |
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