Conversion Factors

To Convert To Multiply By
Atmospheres Bars 1.01325
Atmospheres Feet of H2O (39.2F) 33.8995
Atmospheres mm of mercury (0C) 760
Atmospheres Inches of mercury (32F) 29.9213
Atmospheres psi 14.6960
Bars psi 14.5038
Barrels (oil, US) Gallons (US) 42.0
BTU/min Kilowatt 0.0175725
BTU/min Kilogram-calories 0.25199576
BTU/min Foot-lbs 778.768
BTU Horsepower-hrs 3.92752 x 10-4
BTU Kilogram-meters 107.514
BTU Kilowatt-hrs 2.92875 x 10-4
BTU Therms 0.00001
BTU/hr Foot-lbs/sec 0.21601
BTU/min Horsepower 0.0235651
Centimeters Feet 3.281 x 10-2
Centimeters Inches 0.39370079
Centimeters/sec Feet/min 1.19685039
Cubic centimeters Gallons (US, liq) 2.6417205 x 10-4
Cubic centimeters/min mL/min for water only 1
Cubic centimeters/min Gallons/hr 0.015850323
Cubic feet Cubic inches 1728.0
Cubic feet Cubic meters 0.028316847
Cubic feet Cubic yards 0.03704
Cubic feet Gallons (US, liq) 7.4805195
Cubic feet Liters 28.316847
Cubic feet/hr Liters/min 0.47193
Cubic feet/min Liters/min 28.31605
Cubic inches Cubic centimeters 16.387064
Cubic inches Cubic feet 5.787 x 10-4
Cubic yards Cubic feet 27
Cubic yards Cubic inches 46,656
Cubic yards Gallons (US, liq) 201.97403
Degrees Minutes 60
Degrees Radians 0.017453293
Degrees (angle) Seconds 3600
Drams (avdp) Grains 27.34375
Drams (avdp) Ounces (avdp) 0.0625
Drams (avdp) Grams 1.7718452
Fathoms Feet 6
Feet Centimeters 30.48
Feet Meters 0.3048
Feet of H2O Atmospheres 0.0294990
Feet of H2O Inches of mercury 0.882646
Feet/min Centimeters/sec 0.508
Feet/min Miles/hr 0.01136363
Gallons (US, liq) Cubic centimeters 3785.4118
Gallons (US, liq) Cubic feet 0.133680555
Gallons (US, liq) Cubic yards 4.9511317 x 10-3
Gallons (US, liq) Liters 3.7854118
Gallons of H2O in air (4C) Lbs of H2O 8.33585
Grains Grams 0.06479891
Grains Ounces (avdp) 2.2857143 x 10-3
Grams Grains 15.432358
Grams Ounces (avdp) 0.035273962
Grams Lbs (avdp) 2.2046226 x 10-3
Horsepower BTU/min 42.4356
Horsepower Kilowatts 0.745700
Horsepower Watts 745.700
Horsepower (boiler) BTU (mean)/hr 33445.7
Horsepower (boiler) Kilowatts 9.80950
Inches Centimeters 2.54
Inches of mercury
(32F)
Atmospheres 0.0334211
Inches of mercury
(32F)
Lbs/sq inch 0.4911542
Kilograms Lbs (avdp) 2.2046226
Kilowatts BTU/hr 3414.43
Kilowatts Horsepower 1.34102
Kilowatts Watts 1000.00
Lbs (avdp) Drams (avdp) 256
Lbs (avdp) Grains 7000
Lbs (avdp) Grams 453.59237
Lbs (troy) Grains 5760
Lbs (troy) Pennyweights 240
Lbs/million Btu Nanogram/Joule (ng/J) 430
Lbs/sq inch Atmospheres 0.0680460
Lbs/sq inch Bars 0.0689476
Lbs/sq inch Inches of H2O (39.2F) 27.6807
Lbs/sq inch Inches of mercury 2.03602
Lbs/sq inch Kilograms/cm2 0.070306958
Lbs/sq inch Kilopascals 6.895
Lbs/sq inch Millibars 68.9476
Lbs/sq inch mm of H2O 703.089
Lbs/sq inch mm of mercury 51.7149
Lbs/sq inch Pascals 6,895.0
Liters Cubic feet 0.035314667
Liters Cubic inches 61.023744
Liters Gallons (US, liq) 0.26417205
Liters/min Cubic feet/hr 2.118882
Liters/min Cubic feet/min 0.0353147
Meters Inches 39.370079
Miles (statute) Feet 5280
Miles (statute) Kilometers 1.609344
Miles (statute) Yards 1760
Miles/hr Feet/sec 1.4666666
Miles/hr Kilometers/hr 1.609344
Miles/hr Knots (Int) 0.86897624
mm Inches 0.039370079
mm of mercury (0C) Atmospheres 0.0013157895
Ounces (avdp) Grains 437.5
Ounces (avdp) Grams 28.349523
Ounces (avdp) Lbs (avdp) 0.0625
Pascals Inches of mercury 0.000295
Pascals mm of mercury 0.0075
ppm (density = 1 g/mL for solvent) Grains/gallon (US) 0.05841620
ppm (density = 1 g/mL for solvent) Grains/gallon (Brit.) 0.07015488
Radians Degrees 57.295779
Radians Min 3437.7468
Sq centimeters Sq feet 1.0763867 x 10-3
Sq centimeters Sq inches 0.15500031
Sq feet Acres 2.295684 x 10-5
Sq feet Sq inches 144
Sq feet Sq miles 3.5870064 x 10-8
Sq inches Sq centimeters 6.4516
Sq inches Sq feet 0.0069444
Sq kilometers Acres 247.10538
Sq miles Acres 640
Sq miles Sq yards 3.0976 x 106
Sq yards Acres 2.0661157 x 10-4
Sq yards Sq meters 0.83612736
Therms BTUs 100,000