ALPHABETICAL LISTING OF UNITS AND THEIR CONVERSION FACTORS ATMOSPHERES - atm (Standard at sea-level pressure) x 101.325 = Kilopascals (kPa) absolute x 14.696 = Pounds force per square inch absolute (psia) x 76.00 = Centimetres of mercury (cmHg) at 0 oC x 29.92 = Inches of mercury (inHg) at 0 oC x 33.96 = Feet of water (ftH2O) at 68 oF x 1.01325 = Bars (bar) absolute x 1.0332 = Kilograms-force per square centimetre (kg/cm2) absolute x 1.0581 = Tons-force per square foot (ton/ft2) absolute x 760 = Torr (torr) (= mmHg at 0oC) BARRELS, LIQUID, US - bbl x 0.11924 = Cubic metres (m3) x 31.5 = U.S. gallons (US gal) liquid BARRELS, PETROLEUM - bbl x 0.15899 = Cubic metres (m3) x 42 = U.S. gallons (US gal) oil BARS - bar x 100 = Kilopascals (kPa) x 14.504 = Pounds-force per square inch (psi) x 33.52 = Feet of water (ftH2O) at 68 oF x 29.53 = Inches of mercury (inHg) at 0 oC x 1.0197 = Kilograms-force per square centimetre (kg/cm2) x 0.98692 = Atmospheres (atm) sea-level standard x 1.0443 = Tons-force per square foot (ton/ft2) x 750.06 = Torr (torr) (= mmHg at 0oC) BRITISH THERMAL UNITS - Btu (see note) x 1055 = Joules (J) x 778 = Foot-pounds-force (ft.lbf) x 0.252 = Kilocalories (kcal) x 107.6 = Kilogram-force-metres (kgf.m) x 2.93x10-4 = Kilowatt-hours (kW.h) x 3.93x10-4 = Horsepower-hours (hp.h) Note: There are several different definitions of Btu. The first three significant figures of the conversion factors given in this table are common to most definitions of the Btu. BRITISH THERMAL UNITS PER MINUTE - Btu/min x 17.58 = Watts (W) x 12.97 = Foot-pounds-force per second (ft.lbf/s) x 0.02358 = Horsepower (hp) CENTARES x 1 Square metres (m2) CENTIMETRES - cm x 0.3937 = Inches (in) "CENTIMETRES OF MERCURY - cmHg, at 00C" x 1.3332 = Kilopascals (kPa) x 0.013332 = Bars (bar) x 0.4468 = Feet of water (ftH2O) at 68 oF x 5.362 = Inches of water (inH2O) at 68 oF x 0.013595 = Kilograms-force per square centimetre (kg/cm2) x 27.85 = Pounds-force per square foot (lbf/ft2) x 0.19337 = Pounds-force per square inch (psi) x 0.013158 = Atmospheres (atm) Standard x 10 = Torr (torr) (= mmHg at 0oC) CENTIMETRES PER SECOND - cm/s x 1.9685 = Feet per minute (ft/min) x 0.03281 = Feet per second (ft/s) x 0.03600 = Kilometres per hour (km/h) x 0.6000 = Metres per minute (m/min) x 0.02237 = Miles per hour (mph) CUBIC CENTIMETRES - cm3 x 3.5315 x 10-5 = Cubic feet (ft3) x 6.1024 x 10-2 = Cubic inches (in3) x 1.308 x 10-6 = Cubic yards (yd3) x 2.642 x 10-4 = U.S. Gallons (U.S. gal) x 2.200 x 10-4 = Imperial Gallons (imp gal) x 1.000 x 10-3 = Litres (l) CUBIC FEET - ft3 x 0.02832 = Cubic metres (m3) x 2.832x 104 = Cubic centimetres (cm3) x 1728 = Cubic inches (in3) x 0.03704 = Cubic yards (yd3) x 7.481 = U.S. Gallons (U.S. gal) x 6.229 = Imperial Gallons (imp gal) x 28.32 = Litres (l) CUBIC FEET PER MINUTE - cfm x 472.0 = Cubic centimetres per second (cm3/s) x 1.699 = Cubic metres per hour (m3/h) x 0.4720 = Litres per second (l/s) x 0.1247 = U.S. gallons per second (U.S.gps) x 62.30 = Pounds of water per minute (lbH2O/min) at 68 oF CUBIC FEET PER SECOND - cfs x 0.02832 = Cubic metres per second (m3/s) x 1.699 = Cubic metres per minute (m3/min) x 448.8 = U.S. gallons per minute (U.S. gpm) x 0.6463 = Million U.S. gallons per day (U.S.gpd) CUBIC INCHES - in3 x 1.6387 x 10-5 = Cubic metres (m3) x 16.387 = Cubic centimetres (cm3) x 0.016387 = Litres (l) x 5.787 x 10-4 = Cubic feet (ft3) x 2.143 x 10-5 = Cubic yards (yd3) x 4.329 x 10-3 = U.S. Gallons (U.S. gal) x 3.605 x 10-3 = Imperial Gallons (imp gal) CUBIC METRES - m3 x 1000 = Litres (l) x 35.315 = Cubic feet (ft3) x 61.024x103 = Cubic inches (in3) x 1.308 = Cubic yards (yd3) x 264.2 = U.S. Gallons (U.S. gal) x 220.0 = Imperial Gallons (imp gal) CUBIC METRES PER HOUR- m3/h x 0.2778 = Litres per second (l/s) x 2.778 x 10-4 = Cubic metres per second (m3/s) x 4.403 = U.S. gallon per minute (U.S.gpm) CUBIC METRES PER SECOND- m3/s x 3600 = Cubic metres per hour (m3/h) x 15.85 x 103 = U.S. gallon per minute (U.S.gpm) CUBIC YARDS - yd3 x 0.7646 = Cubic metres (m3) x 764.6 = Litres (l) x 7.646 x 105 = Cubic centimetres (cm3) x 27 = Cubic feet (ft3) x 46656 = Cubic inches (in3) x 201.97 = U.S. Gallons (U.S. gal) x 168.17 = Imperial Gallons (imp gal) DEGREES, ANGULAR (O) x 0.017453 = Radians (rad) x 60 = Minutes (') x 3600 = "Seconds ("") x 1.111 = Grade (gon) DEGREES PER SECOND, ANGULAR (O/s) x 0.017453 = Radians per second (rad/s) x 0.16667 = Revolutions per minute (r/min) x 2.7778 x 10-3 = Revolutions per second (r/s) DRAMS (dr) x 1.7718 = Grams (g) x 27.344 = Grains (gr) x 0.0625 = Ounces (oz) FATHOMS x 1.8288 = Metres (m) x 6 = Feet (ft) FEET - ft x 0.3048 = Metres (m) x 30.480 = Centimetres (cm) x 12 = Inches (in) x 0.3333 = Yards (yd) FEET OF WATER - ftH2O at 68 oF x 2.984 = Kilopascals (kPa) x 0.02984 = Bars (bar) x 0.8811 = Inches of mercury (inHg) at 0 oC x 0.03042 = Kilograms-force per square centimetre (kg/cm2) x 62.32 = Pounds-force per square foot (lbf/ft2) x 0.4328 = Pounds-force per square inch (psi) x 0.02945 = Atmospheres (atm) Standard FEET PER MINUTE - ft/min x 0.5080 = Centimeters per second (cm/s) x 0.01829 = Kilometres per hour (km/h) x 0.3048 = Metres per minute (m/min) x 0.016667 = Feet per second (ft/s) x 0.01136 = Miles per hour (mph) FEET PER SECOND PER SECOND - ft/s2 x 0.3048 = Metres per second per second (m/s2) x 30.48 = Centimetres per second per second (cm/s2) FOOT.POUND.FORCE - ft.lbf x 1.3560 = Joules (J) x 1.285 x 10-3 = British Thermal Units (Btu) x 3.239 x 10-4 = Kilocalories (kcal) x 0.13825 = Kilogram.force.metres (kgf.m) x 5.05 x 10-7 = Horsepower.hours (hp.h) x 3.766 x 10-7 = Kilowatt.hours (kW.h) GALLONS, U.S. - U.S. gal x 3785.4 = Cubic centimetres (cm3) x 3.7854 = Litres (l) x 3.7854 x 103 = Cubic metres (m3) x 231 = Cubic inches (in3) x 0.13368 = Cubic feet (ft3) x 4.951 x 103 = Cubic yards (yd3) x 8 = Pints (pt) liquid x 4 = Quarts (qt) liquid x 0.8327 = Imperial Gallons (imp.gal) x 8.328 = Pounds of water at 60oF in air x 8.337 = Pounds of water at 60oF in vacuo GALLONS, IMPERIAL - imp gal x 4546 = Cubic centimetres (cm3) x 4.546 = Litres (l) x 4.546 x 10-3 = Cubic metres (m3) x 0.16054 = Cubic feet (ft3) x 5.946 x 10-3 = Cubic yards (yd3) x 1.20094 = U.S. Gallons (U.S. gal) x 10.000 = Pounds of water at 62oF in air GALLONS, PER MINUTE, U.S. - U.S. gpm x 0.22715 = Cubic metres per hour (m3/h)) x 0.06309 = Litres per second (l/s) x 8.021 = Cubic feet per hour (cfh) x 2.228 x 10-3 = Cubic feet per second (cfs) GRAINS - gr av. or troy x 0.0648 = Grams (g) GRAINS PER U.S. GALLON - gr/U.S. gal at 60oF x 17.12 = Grams per cubic metre (g/m3) x 17.15 = Parts per million by weight in water x 142.9 = Pounds per million gallons GRAINS PER IMPERIAL GALLON - gr/imp gal at 62oF x 14.25 = Grams per cubic metre (g/m3) x 14.29 = Parts per million by weight in water GRAMS - g x 15.432 = Grains (gr) x 0.035274 = Ounces (oz) av. x 0.032151 = Ounces (oz) troy x 2.2046 x 10-3 = Pounds (lb) GRAMS FORCE - gf x 9.807 x 10-3 = Newtons (N) GRAMS-FORCE PER CENTIMETRES - gf/cm x 98.07 = Newtons per metre (N/m) x 5.600 x 10-3 = Pounds force per inch (lbf/in) GRAMS PER CUBIC CENTIMETRE - g/cm3 x 62.43 = Pounds per cubic feet (lb/ft3) x 0.03613 = Pounds per cubic inch (lb/in3) GRAMS PER LITRES - g/l x 58.42 = Grains per U.S. gallon (gr/U.S. gal) x 8.345 = Pounds per 1000 U.S. gallons x 0.06243 = Pounds per cubic feet (lb/ft3) x 1002 = Parts per millin by mass (weight) in water at 60oF HECTARES - ha x 1.000 x 104 = Square metres (m2) x 1.0764 x 105 = Square feet (ft2) HORSEPOWER - hp x 745.70 = Watts (W) x 0.7457 = Kilowatts (kW) x 33000 = Foot.Pounds.force per minute (ft.lbf/min) x 550 = Foot.Pounds.force per second (ft.lbf/s) x 42.43 = British thermal units per minute (Btu/min) x 10.69 = Kilocalories per minute (kcal/min) x 1.0139 = Horsepower (metric) HORSEPOWER - hp boiler x 33.480 = British thermal units per hour (Btu/h) x 9.809 = Kilowatts (kW) HORSEPOWER.HOURS - hp.h x 0.7457 = Kilowatt.hours (kW.h) x 1.976 x 106 = Foot.Pounds.force (ft.lbf) x 2545 = British thermal units (Btu) x 641.5 = Kilocalories (kcal) x 2.732 x 105 = Kilogram.force.metres (kgf.m) INCHES - in x 2.540 = Centimetres (cm) INCHES OF MERCURY - inHg at 0oC x 3.3864 = Kilopascals (kPa) x 0.03386 = Bars (bar) x 1.135 = Feet of water (ftH2O) at 68oF x 13.62 = Inches of water (inH2O) at 68oF x 0.03453 = Kilograms.force per square centimetre (kg/cm2) x 70.73 = Pounds.force per square foot (lbf/ft2) x 0.4912 = Pounds.force per square inch (psi) x 0.03342 = Standard atmospheres INCHES OF WATER - inH2Oat 68oF x 0.2487 = Kilopascals (kPa) x 2.487 x 10-3 = Bars (bar) x 0.07342 = Inches of mercury (inHg) at 0oC x 2.535 x 10-3 = Kilograms.force per square centimetre (kg/cm2) x 0.5770 = Ounces.force per square inch (ozf/in2) x 5.193 = Pounds.force per square foot (lbf/ft2) x 0.03606 = Pounds.force per square inch (psi) x 2.454 x 10-3 = Standard atmospheres JOULES - J x 0.9484 x 10-3 = British thermal units (Btu) x 0.2390 = Calories (cal) thermochemical x 0.7376 = Foot.pounds.force (ft.lbf) x 2.778 x 10-4 = Watt.hours (W.h) KILOGRAMS - kg x 2.2046 = Pounds (lb) x 1.102 x 10-3 = Tons (ton) short KILOGRAMS FORCE - kgf x 9.8070 = Newtons (N) x 2.205 = Pounds.force (lbf) KILOGRAMS.FORCE PER METRE - kgf/m x 9.8070 = Newtons per metre (N/m) x 0.6721 = Pounds.force per foot (lbf/ft) KILOGRAMS.FORCE PER SQUARE CENTIMETRE - kg/cm2 x 98.0700 = Kilopascals (kPa) x 0.9807 = Bars (bar) x 32.870 = Feet of water (ftH2O) at 68oF x 28.96 = Inches of mercury (inHg) at 0oC x 2048 = Pounds.force per square foot (lb/ft2) x 14.223 = Pounds.force per square inch (psi) x 0.9678 = Standard atmospheres KILOGRAMS.FORCE PER SQUARE MILLIMETRE - kgf/mm2 x 9.807 = Megapascals (MPa) x 1.000 x 106 = Kilograms.force per square metre (kgf/m2) KILOMETRES PER HOUR - km/h x 27.78 = Centimetres per second (cm/s) x 0.9113 = Feet per second (ft/s) x 54.68 = Feet per minute (ft/min) x 16.667 = Metres per minute (m/min) x 0.53996 = International knots (kn) x 0.6214 = Miles per hour (mph) KILOMETRES PER HOUR PER SECOND - km.h-1.s-1 x 0.2778 = Metres per second per second (m/s2) x 27.78 = Centimetres per second per second (cm/s2) x 0.9113 = Feet per second per second (ft/s2) KILOMETRES PER SECOND - km/s x 37.28 = Miles per minute (mi/min) KILOPASCALS - kPa x x 103 = Pascals (Pa) or newtons per square metre (N/m2) x 0.1450 = Pounds.force per square inch (psi) x 0.010197 = Kilograms.force per square centimetre (kg/cm2) x 0.2953 = Inches of mercury (inHg) at 32oF x 0.3351 = Feet of water (ftH2O) at 68oF x 4.021 = Inches of water (inH2O) at 68oF KILOWATTS - kW x 4.425 x 104 = Foot.Pounds.force per minute (ft.lbf/min) x 737.6 = Foot.Pounds.force per second (ft.lbf/s) x 56.90 = British thermal units per minute (Btu/min) x 14.33 = Kilocalories per minute (kcal/min) x 1.3410 = Horsepower (hp) KILOWATT.HOURS - kW.h x 3.6 x 106 = Joules (J) x 2.655 x 106 = Foot.Pounds.force (ft.lbf) x 3413.0 = British thermal units (Btu) x 860.00 = Kilocalories (kcal) x 3.671 x 105 = Kilogram.force.metres (kgf.m) x 1.3410 = Horsepower.hours (hp.h) KNOTS - kn (international) x 0.5144 = Metres per second (m/s) x 1.151 = Miles per hours (mph) LITRES - l x 1000 = Cubic centimetres (cm3) x 0.035315 = Cubic feet (ft3) x 61.024 = Cubic inches (in3) x 1.308 x 10-3 = Cubic yards (yd3) x 0.2642 = U.S. Gallons (U.S. gal) x 0.2200 = Imperial gallons (imp gal) LITRES PER MINUTE - l/min x 0.01667 = Litres per second (l/s) x 5.885 x 10-4 = Cubic feet per second (cfs) x 4.403 x 10-3 = U.S. gallons per second (U.S.gal/s) x 3.666 x 10-3 = Imperial gallons per second (imp gal/s) LITRES PER SECOND - l/s x 10-3 = Cubic metres per second (m3/s) x 3.600 = Cubic metres per hour (m3/h) x 60 = Litres per minute (l/min) x 15.85 = U.S. Gallons per minute (U.S. gpm) x 13.20 = Imperial gallons per minute (imp gpm) MEGAPASCALS - Mpa x '106 = Pascals (Pa) or newtons per square metre (N/m2) x '103 = Kilopascals (kPa) x 145.0 = Pounds.force per square inch (psi) x 0.1020 = Kilograms.force per square millimetre (kgf.mm2) METRES - m x 3.281 = Feet (ft) x 39.37 = Inches (in) x 1.0936 = Yards (yd) METRES PER MINUTE - m/min x 1.6667 = Centimetres per second (cm/s) x 0.0600 = Kilometres per hour (km/h) x 3.2810 = Feet per minute (ft/min) x 0.05468 = Feet per second (ft/s) x 0.03728 = Miles per hour (mph) METRES PER SECOND - m/s x 3.600 = Kilometres per hour (km/h) x 0.0600 = Kilometres per minute (km/min) x 196.8 = Feet per minute (ft/min) x 3.281 = Feet per second (ft/s) x 2.237 = Miles per hour (mph) x 0.03728 = Miles per minute (mi/min) MICROMETRES - um formerly micron x '10-6 = Metres (m) MILES - mi x 1.6093 x 103 = Metres (m) x 1.6093 = Kilometres (km) x 5280 = Feet (ft) x 1760 = Yards (yd) MILES PER HOUR - mph x 44.70 = Centimetres per second (cm/s) x 1.6093 = Kilometres per hour (km/h) x 26.82 = Metres per minute (m/min) x 88 = Feet per minute (ft/min) x 1.4667 = Feet per second (ft/s) x 0.8690 = International knots (kn) MILES PER MINUTE - mi/min x 1.6093 = Kilometres per minute (km/min) x 2682 = Centimetres per second (cm/s) x 88 = Feet per second (ft/s) x 60 = Miles per hour (mph) MINUTES. ANGULAR - (') x 2.909 x 10-4 = Radians (rad) NEWTONS - N x 0.10197 = Kilograms.force (kgf) x 0.2248 = Pounds.force (lbf) x 7.233 = Poundals x x 105 = Dynes OUNCES - oz av. x 28.350 = Grams (g) x 2.835 x 10-5 = Tonnes (t) metric ton x 16 = Drams (dr) av. x 437.5 = Grains (gr) x 0.06250 = Pounds (lb) av. x 0.9115 = Ounces (oz) troy x 2.790 x 10-5 = Tons (ton) long OUNCES - oz troy x 31.103 = Grams (g) x 480 = Grains (gr) x 20 = Pennyweights (dwt) troy x 0.08333 = Pounds (lb) troy x 0.06857 = Pounds (lb) av. x 1.0971 = Ounces (oz) av. OUNCES - oz U.S. fluid x 0.02957 = Litres (l) x 1.8046 = Cubic inches (in3) OUNCES.FORCE PER SQUATRE INCH - ozf/in2 x 43.1 = Pascals (Pa) x 0.06250 = Pounds.force per square inch (psi) x 4.395 = Grams.force per square centimetre (gf/cm2) PARTS PER MILLION BY MASS - mass (weight) in water x 0.9991 = Grams per cubic metre (g/m3) at 15oC x 0.0583 = Grains per U.S. gallon (gr/U.S. gal) at 60oF x 0.0700 = Grains per imperial gallon (gr/imp gal) at 62oF x 8.328 = Pounds per million U.S. gallon at 60oF PASCALS - Pa x 1 = Newtons per square metre (N/m2) x 1.450 x 10-4 = Pounds.force per square inch (psi) x 1.0197 x 10-5 = Kilograms.force per square centimetre (kg/cm2) x 10-3 = Kilopascals (kPa) PENNYWEIGHTS - dwt troy x 1.5552 = Grams (g) x 24 = Grains (gr) POISES - P x 0.1000 = Newton.seconds per square metre (N.s/m2) x 100 = Centipoises (cP) x 2.0886 x 10-3 = Pounds.force.seconds per square foot (lbf.s/ft2) x 0.06721 = Pounds per foot second (lb/ft.s) POUNDS.FORCE - lbf.av x 4.448 = Newtons (N) x 0.4536 = Kilograms.force (kgf) POUNDS - lb av. x 453.6 = Grams (g) x 16 = Ounces (oz) av x 256 = Drams (dr) av x 7000 = Grains (gr) x 5 x 10-4 = Tons (ton) short x 1.2153 = Pounds (lb) troy POUNDS - lb troy x 373.2 = Grams (g) x 12 = Ounces (oz) troy x 240 = Pennyweights (dwt) troy x 5760 = Grains (gr) x 0.8229 = Pounds (lb) av x 13.1660 = Ounces (oz) av x 3.6735 x 10-4 = Tons (ton) long x 4.1143 x 10-4 = Tons (ton) short x 3.7324 x 10-4 = Tonnes (t) metric tons POUNDS-MASS OF WATER AT 60OF x 453.98 = Cubic centimetres (cm3) x 0.45398 = Litres (l) x 0.01603 = Cubic feet (ft3) x 27.70 = Cubic inches (in3) x 0.1199 = U.S. Gallons (U.S. gal) POUNDS OF WATER PER MINUTE AT 60OF x 7.576 = Cubic centimetres per second (cm3/ s) x 2.675 x 10-4 = Cubic feet per second(cfs) POUNDS PER CUBIC FOOT - lb/ft3 x 16.018 = Kilograms per cubic metre (kg/m3) x 0.016018 = Grams per cubic centimetre (g/cm3) x 5.787 x 10-4 = Pounds per cubic inch (lb/in3) POUNDS PER CUBIC INCH - lb/in3 x 2.768 x 104 = Kilograms per cubic metre (kg/m3) x 27.68 = Grams per cubic centimetre (g/cm3) x 1728 = Pounds per cubic foot (lb/ft3) POUNDS.FORCE PER FOOT - lbf/ft x 14.59 = Newtons per metre (N/m) x 1.488 = Kilograms.force per metre (kgf/m) x 14.88 = Grams.force per centimetre (gf/cm) POUNDS.FORCE PER SQUARE FOOT - lbf/ft2 x 47.88 = Pascals (Pa) x 0.01605 = Feet of water (ftH2O) at 68oF x 4.882 x 10-4 = Kilograms.force per square centimetre (kg/cm2) x 6.944 x 10-3 = Pounds.force per square inch (psi) POUNDS.FORCE PER SQUARE INCH - psi x 6.895 = Kilopascals (kPa) x 0.06805 = Standard atmospheres x 2.311 = Feet of water (ftH2O) at 68oF x 27.73 = Inches of water (inH2O) at 68oF x 2.036 = Inches of mercury (inHg) at 0oC x 0.07031 = Kilograms.force per square centimetre (kg/cm2) QUARTS - qt dry x 1101 = Cubic centimetres (cm3) x 67.20 = Cubic inches (in3) QUARTS - qt liquid x 946.4 = Cubic centimetres (cm3) x 57.75 = Cubic inches (in3) QUINTALS - obsolete metric mass term x 100 = Kilograms (kg) x 220.46 = Pounds (lb) U.S. av. x 101.28 = Pounds (lb) Argentina x 129.54 = Pounds (lb) Brazil x 101.41 = Pounds (lb) Chile x 101.47 = Pounds (lb) Mexico x 101.43 = Pounds (lb) Peru RADIANS - rad x 57.30 = Degrees (o) angular RADIANS PER SECOND - rad/s x 57.30 = Degrees per second(o/s) angular STANDARD CUBIC FEET PER MINUTE - scfm (at 14.696 psia and 60F) x 0.4474 = Litres per second (l/s) at standard conditions (760 mmHg and 0oC) x 1.608 = Cubic metres per hour (m3/h) at standard conditions (760 mmHg and 0oC) STOKES - St x x 10-4 = Square metres per second (m2/ s) x 1.076 x 10-3 = Square feet per second (ft2/ s) TONS MASS - tonm long x 1016 = Kilograms (kg) x 2240 = Pounds (lb) av. x 1.1200 = Tons (ton) short TONNES - t metric ton, millier x 1000 = Kilograms (kg) x 2204.6 = Pounds (lb) TONNES.FORCE - tf metric ton-force x 980.7 = Newtons (N) TONS - ton short x 907.2 = Kilograms (kg) x 0.9072 = Tonnes (t) x 2000 = Pounds (lb) av. x 32000 = Ounces (oz) av. x 2430.6 = Pounds (lb) troy x 0.8929 = Tons (ton) long TONS OF WATER PER 24 HOURS AT 60OF x 0.03789 = Cubic metres per hour (m3/h) x 83.33 = Pounds of water per hour (lb/hH2O) at 60oF x 0.1668 = U.S. gallons per minute (U.S.gpm) x 1.338 = Cubic feet per hour (cfh) WATTS - W x 0.05690 = British thermal units per minute (Btu/min) x 44.25 = Foot.pounds.force per minute (ft.lbf/min) x 0.7376 = Foot.pounds.force per second (ft.lbf/s) x 1.341 x 10-3 = Horsepower (hp) x 0.01433 = Kilocalories per minute (kcal/min) WATT HOURS - W.h x 3600 = Joules (J) x 3.413 = British thermal units (Btu) x 0.2655 = Foot.pounds.force (ft.lbf) x 1.341 x 10-3 = Horsepower.hours (hp.h) x 0.860 = Kilocalories (kcal) x 367.1 = Kilogram.force.metres (kgf.m)