Conversion FactorsConverting PressureTo Convert Into Multiply atmosphere bar 1.01295 atmosphere dynes/cm2 1.01295 x 106 atmosphere in. Hg29.9213 atmosphere in. water406.86 atmosphere kg/cm2 1.03325 atmosphere mbar1012.95 atmosphere mtorr or micron Hg7.6 x 105 atmosphere Pa or N/m2 1.01295 x 105 atmosphere psi or lb/in214.696 atmosphere torr or mm Hg760.00 bar atmosphere0.9872bar dynes/cm2 1 x 106bar in. Hg29.54bar in. water401.65bar kg/cm2 1.0200bar mbar1000bar mtorr or micron Hg7.5028 x 105 bar Pa or N/m2 1 x 105bar psi or lb/in214.508bar torr or mm Hg750.2838 dynes/cm2atmosphere9.872 x 10-7 dynes/cm2bar 1 x 10-6 dynes/cm2in. Hg 2.954 x 10-5 dynes/cm2in. water 4.0165 x 10-4dynes/cm2kg/cm2 1.0200 x 10-6 dynes/cm2mbar 1 x 10-3 dynes/cm2mtorr or micron Hg0.75028 dynes/cm2Pa or N/m20.1 dynes/cm2psi or lb/in2 1.4508 x 10-5 dynes/cm2torr or mm Hg7.5028 x 10-4 in. Hg atmosphere 3.342 x 10-2 in. Hg bar 3.385 x 10-2 in. Hg dynes/cm2 3.385 x 104 in. Hg in. water13.598 in. Hg kg/cm2 3.4532 x 10-2 in. Hg mbar33.85 in. Hg mtorr or micron Hg 2.54 x 104 in. Hg Pa or N/m23385 in. Hg psi or lb/in20.4912 in. Hg torr or mm Hg25.4 in. water atmosphere 2.458 x 10-3 in. water bar 2.489 x 10-3 in. water dynes/cm2 2.489 x 103 in. water kg/cm2 2.5396 x 10-3 in. water in. Hg7.354 x 10-2 in. water mbar 2.489 in. water mtorr or micron Hg 1.868 x 103 in. water Pa or N/m2248.9 in. water psi or lb/in2 3.612 x 10-2 in. water torr or mm Hg 1.868kg/cm2atmosphere0.9678kg/cm2bar0.9804kg/cm2dynes/cm29.804 x 105 kg/cm2in. Hg28.958kg/cm2in. water393.76kg/cm2mbar9.804 x 102 kg/cm2mtorr or micron Hg7.3554 x 105 kg/cm2Pa or N/m29.804 x 104kg/cm2psi or lb/in214.223kg/cm2torr or mm Hg7.3554 x 102 mbar atmosphere9.872 x 10-4 mbar bar0.001mbar dynes/cm21000mbar kg/cm2 1.0200 x 10-3 mbar in. Hg 2.954 x 10-2 mbar in. water0.4018mbar mtorr or micron Hg7.5028 x 102 mbar Pa or N/m2100mbar psi or lb/in2 1.450 x 10-2 mbar torr or mm Hg0.75028 mtorr or micron Hg atmosphere 1.316 x 10-6 mtorr or micron Hg bar 1.3328 x 10-6 mtorr or micron Hg dynes/cm2 1.3328 mtorr or micron Hg kg/cm2 1.3595 x 10-6 mtorr or micron Hg in. Hg 3.937 x 10-5 mtorr or micron Hg in. water 5.353 x 10-4 mtorr or micron Hg mbar 1.3328 x 10-3 mtorr or micron Hg Pa or N/m20.13328 mtorr or micron Hg psi or lb/in2 1.934 x 10-5 mtorr or micron Hg torr 1 x 10-3 Pa or N/m2atmosphere9.869 x 10-6 Pa or N/m2bar 1 x 10-5 Pa or N/m2dynes/cm210Pa or N/m2kg/cm2 1.020 x 10-5 Pa or N/m2in. Hg 2.954 x 10-4 Pa or N/m2in. water 4.018 x 10-3 Pa or N/m2mbar0.01Pa or N/m2mtorr or micron Hg7.5028 Pa or N/m2psi or lb/in2 1.4508 x 10-4 Pa or N/m2torr or mm Hg7.5028 x 10-3 psi or lb/in2atmosphere0.06805 psi or lb/in2bar0.06893psi or lb/in2dynes/cm2 6.8927 x 104 psi or lb/in2kg/cm27.0309 x 10-2 psi or lb/in2in. Hg 2.036psi or lb/in2in. water27.68psi or lb/in2mbar68.97psi or lb/in2mtorr or micron Hg 5.171 x 104 psi or lb/in2Pa or N/m2 6.8927 x 103 psi or lb/in2torr or mm Hg51.71torr or mm Hg atmosphere 1.3158 x 10-3 torr or mm Hg bar 1.3328 x 10-3 torr or mm Hg dynes/cm2 1.3328 x 103 torr or mm Hg kg/cm2 1.3595 x 10-3 torr or mm Hg in. Hg 3.937 x 10-2 torr or mm Hg in. water0.5353 torr or mm Hg mbar 1.3328 torr or mm Hg mtorr or micron Hg1000torr or mm Hg Pa or N/m2133.28 torr or mm Hg psi or lb/in2 1.934 x 10-2Converting Pumping SpeedTo Convert Into Multiply ft3/min L/sec0.47195 ft3/min m3/hr 1.69901L/hr L/sec 2.77778 x 10-4 L/min L/sec 1.66667 x 10-2 L/sec ft3/min 2.11887L/sec m3/sec0.001L/sec m3/hr 3.6m3/hr ft3/min0.58858 m3/hr L/sec0.27778Converting Throughput UnitsTo Convert Into Multiply /sec Pa.L/sec101.295 /sec molecules/sec 2.6868 x 1019/sec torr.L/sec0.7600/sec watt0.10143 micron.L/sec Pa.L/sec0.13328 molecules/sec /sec 3.7219 x 10-20 molecules/sec Pa.L/sec 3.7701 x 10-18 molecules/sec torr.L/sec 2.8287 x 10-20 molecules/sec watt 3.7701 x 10-21 Pa.L/sec /sec9.872 x 10-3 Pa.L/sec molecules/sec 2.652 x 1017 Pa.L/sec Pa.m3/hr 3.6Pa.L/sec torr.L/sec7.5028 x 10-3 Pa.L/sec watt10-3torr.L/sec /sec 1.31579torr.L/sec watt0.13328torr.L/sec molecules/sec 3.5352 x 1019 torr.L/sec Pa.L/sec133.28 watt /sec9.859watt molecules/sec 2.5 x 1020watt Pa.L/sec1000watt torr.L/sec7.503Converting Outgassing UnitsTo Convert Into Multiply micron.L/(cm2.sec)Pa.L/(m2.sec)1332.8 micron.L/(cm2.sec)Pa.m3/(m2.sec) 1.3328 micron.L/(cm2.sec)torr.L/(cm2.sec) 1 x 10-3 micron.L/(cm2.sec)W/m2 1.3328 Pa.L/(m2.sec)Pa.m3/(m2.sec) 1 x 10-3 Pa.L/(m2.sec)micron.L/(cm2.sec)7.5 x 10-4 Pa.L/(m2.sec)torr.L/(cm2.sec)7.5 x 10-7 Pa.L/(m2.sec)W/m2 1 x 10-3 Pa.m3/(m2.sec)micron.L/(cm2.sec)0.75 Pa.m3/(m2.sec)Pa.L/(m2.sec)1000 Pa.m3/(m2.sec)torr.L/(cm2.sec)7.5 x 10-4 Pa.m3/(m2.sec)W/m21torr.L/(cm2.sec)micron.L/(cm2.sec)1000 torr.L/(cm2.sec)Pa.L/(m2.sec) 1.3332 x 106 torr.L/(cm2.sec)Pa.m3/(m2.sec)1333.2 torr.L/(cm2.sec)W/m21333.2 W/m2micron.L/(cm2.sec)0.75W/m2Pa.L/(m2.sec)1000W/m2Pa.m3/(m2.sec)1W/m2torr.L/(cm2.sec)7.50 x 10-4Converting Weights and MeasuresTo Convert Into Multiply ampere-turn gilbert 1.257 ampere-turn/cm ampere-turn/in 2.54 ampere-turn/in gilbert/cm0.495 ampere-turn/in ampere-turn/cm0.3937 ampere/cm2ampere/in2 6.452 angstrom microinch0.00393 angstrom millimicron0.1angstrom cm10-8angstrom nanometer0.1angstrom micron10-4b/mil ft grams/cm3 2.306 x 106 Btu joule1054Btu kilowatt-hour 2.929 x 10-4 Btu ft-lb777.6 Btu/minute watt17.57 calorie (kg)joule4184 calorie (kg)Btu 3.968 calorie (kg)horsepower hr. 1.558 x 10-3 calorie (kg)ft-lb3086 calories (kg)kilowatt-hour 1.162 x 10-3 circular mil cm2 5.067 x 10-6 circular mil in27.854 x 10-7 circular mil sq mil0.7854 cm mil393.7cm inch0.3937cm angstrom108cm2ft2 1.076 x 10-3 cm2circular mil 1.974 x 105 cm2in20.155cm3gallon 2.642 x 10-4 cm3in3 6.102 x 10-2 cm3quarts (liquid) 1.057 x 10-3 cm3liter10-3cm3ft3 3.531 x 10-5 cm3pints (liquid) 2.113 x 10-3 coulombs/in2coulombs/cm20.155 degree (angle)minute60 degree (angle)second3600 degree (angle)radian0.01745 degree/sec radian/sec0.01745 degree/sec revolution/sec0.002778 degree/sec rpm0.1667 dyne pound 2.248 x 10-6 dyne gram 1.020 x 10-3 dynes/cm2bar 1 x 10-6 erg dyne-cm1erg kg-meter 1.020 x 10-8 erg gram-cm 1.020 x 10-3 erg ft-lb7.376 x 10-8 erg kg-calorie 2.390 x 10-11 erg joule10-7erg Btu9.486 x 10-11 ergs/sec Btu/min 5.691 x 10-9 ergs/sec kilowatt10-10 ergs/sec ft-lb/min 4.42 x 10-6 feet cm30.48feet meter0.3048ft-lb meter-kilogram0.1383ft-lb cm-gram13.826ft-lb cm-dyne 1.356 x 107ft2in2144ft2m20.0929ft2cm2929.0ft3lb. water62.4ft3liter28.32ft3pint (liquid)59.84ft3cm3 2.832 x 104 ft3in31728ft3m30.02832 ft3quart (liquid)29.92ft3gallon7.481ft3yd30.03704 ft3/min gallon/sec0.1247 ft3/min cm3/sec471.9 ft3/min liter/sec0.4719 gallon quart (liquid)4gallon liter 3.785 gallon cm33785 gallon pint (liquid)8gallon ft30.1337 gallon lb. water8.34 gallon in3231gallon m3 3.785 x 10-3 gallon/min liter/sec0.064 gallon/min ft3/sec 2.228 x 10-3 gauss lines/in2 6.452 gilbert ampere-turn0.7958 gram oz0.03527 gram dyne980.7 gram lb 2.205 x 10-3 gram-calorie Btu 3.968 x 10-3 gram-cm kg-meter10-5 gram-cm joule9.807 x 10-5 gram-cm ft-lb7.233 x 10-5 gram-cm erg980.7gram-cm Btu9.302 x 10-8 gram-cm kg-calorie 2.344 x 10-8 gram/cm lb/in 5.6 x 10-3 gram/cm3lb/circular mil ft 3.405 x 10-7 gram/cm3lb/in30.03613 gram/cm3lb/ft362.43horsepower horsepower(metric)1.014horsepower watt745.7 in2ft2 6.944 x 10-3 in2cm2 6.452in2sq mil106in2mm2645.2in2circular mil 1.273 x 106 in3pint (liquid)0.0346322 in3quart (liquid)0.01732in3liter 1.639 x 10-2 in3gallon 4.329 x 10-3 in3m3 1.639 x 10-5 in3ft3 5.787 x 10-4 in3cm316.39inch angstrom 2.54 x 108 inch cm 2.54joule watt-hour 2.778 x 10-4 joule kg-meter0.1020joule kg-calorie 2.390 x 10-4 joule ft-lb0.7377joule erg107joule Btu9.486 x 10-4 kilogram tons (short) 1.102 x 10-3 kilogram lb 2.2046 kilogram (force)dyne980,665 kilogram-meter kilowatt-hour 2.724 x 10-6 kiloline maxwell103kilometer mile0.6214kilometer feet3281 kilowatt ft-lb/sec737.6 kilowatt ft-lb/min 4.425 x 104 kilowatt Btu/minute56.92 kilowatt-hour kilogram-meter 3.671 x 105 kilowatt-hour joule 3.6 x 106 kilowatt-hour ft-lb 2.655 x 106 kilowatt-hour Btu3415km/hour m/min16.67 km/hour mile/hour0.6214 km/hour ft/sec0.9113 km/hour ft/min54.68 km/hour cm/sec27.78km2ft2 1.076 x 107 lb water gallon0.1198 lb water in327.68 lb water ft30.01602 lb water/min ft3/sec 2.669 x 10-4 lb/ft kg/meter 1.488 lb/ft2kg/m2 4.882 lb/ft2ft. water0.01602 lb/ft2lb/in2 6.944 x 10-3 lb/in grams/cm178.6 lb/in.2lb/ft2144lb/in.2kg/m2703.1 lb/in.2in. Hg 2.036 lb/in.2ft. water 2.307 lb/in.2atmosphere0.06804 lines/cm2gauss1lines/in2gauss0.155liter quart (liquid) 1.057liter pint (liquid) 2.113liter gallon0.2642 liter in361.02liter ft30.03531 liter/min gallon/sec 4.403 x 10-3liter/min ft3/sec 5.885 x 10-4 lumen/ft2foot-candle1m/min miles/hour0.03728 m/min km/hour0.06 m/min ft/sec0.05468 m/sec miles/min0.03728 m/sec km/min0.06m/sec km/hr 3.6m/sec ft/sec 3.281 m/sec ft/min196.8 m/sec miles/hour 2.237m2sq mile 3.861 x 10-7 m2ft210.764m3quarts (liquid)1057m3pints (liquid)2113m3gallon264.2m3in361,024m3ft335.31m3cm3106 maxwell kiloline10-3 megaline maxwell106meter inch39.37 meter feet 3.2808 meter angstrom1010 mhos/mil ft megmhos/in315.28 mhos/mil ft megmhos/cm3 6.015 microhm/cm3ohms/mil ft 6.015 microhm/cm3microhms/in30.3937 microhm/in3microhm/cm3 2.54 microinch angstrom254 micromicron angstrom0.01 micron angstrom10,000mil inch10-3mil cm0.0025 milliliter cm3 1.0 millimeter mil39.37millimeter micron1000 millimeter inch0.03937 millimeter angstrom107millimicron angstrom10minute seconds (angle)60 minutes (angle)radian 2.909 x 10-4 mm2in2 1.55 x 10-3 mm2cm20.01mm2circular mil 1.974 x 103 nanometer micron10-3 ohms/mil ft microhm/in30.06524 ohms/mil ft microhm/cm30.1662 ounces (fluid)liter0.02957 ounces (fluid)in3 1.805 oz/in2psi0.0625 pints (liquid)in328.88 pints (dry)in333.6pound oz16pound gram453.6 pound (force)dyne444,823 quadrants (angle)radian 1.571 quadrants (angle)minute5400 quadrants (angle)degree90 quart fluid ounce32 quarts (liquid)in357.75 quarts (dry)in367.2 radian degrees/sec57.3radian quandrant0.637radian minute3438radian degree57.3 radians/sec revolutions/sec0.1592 radians/sec rpm9.549 revolution radian 6.283 revolution quadrant4revolution degree360 revolutions/sec rpm60 revolutions/sec radians/sec 6.283revolutions/sec degrees/sec360 rpm revolutions/sec0.01667rpm radians/sec0.1047rpm degrees/sec6 seconds (angle)radian 4.848 x 10-6 spheres (solid angle)steradian12.57 spherical rt. angle steradian 1.571 spherical rt. angle sphere0.125 spherical rt. angle hemisphere0.25 steradian sphere0.07958steradian hemisphere0.1592stere liter103 tons (short)lb2000tons (short)kg907.2 tons (metric)lb2205 tons (metric)kg103tons (long)lb2240tons (long)kg1016 watt kilowatt10-3watt ft-lb/sec0.7376watt ft-lb/min44.25watt ergs/sec107watt Btu/min0.05692 watt-hour kilogram-meter367.1watt-hour ft-lb2655watt-hour Btu 3.414weber maxwell108。