View Table of Contents 
Print | E-mail
Introduction
Units of Measurement
Common Minerals and Metals
Useful Conversion Factors
Useful Formulas
Capacity Tables
Hole Capacity
Drill Pipe Capacity and Displacement
API Casing and Liner Capacity and Displacement
Annular Capacity
Annular Velocity
Single Salt Fluid Composition and Blending Tables
Ammonium Chloride Composition and Blending Tables
Potassium Chloride Composition and Blending Tables
Sodium Chloride Composition and Blending Tables
Sodium Formate Composition and Blending Tables
Potassium Formate Composition and Blending Tables
Sodium Bromide Composition and Blending Tables
Calcium Chloride Composition and Blending Tables
Calcium Bromide Composition and Blending Tables
Useful Conversion Factors
Blue Line
TABLE 15. Useful Conversion Factors

Conversion Factors
Multiply by to Get
acres, ac 0.4047 hectares, ha
acres, ac 43,560 square feet, ft2
acres, ac 4047 square meters, m2
acre-feet 43560 cubic feet, ft3
atmospheres, atm 14.70 pounds per square inch, lb/in2
bars 0.9869 atmospheres, atm
bars 14.5 pounds per square inch, lb/in2
barrels, bbl 5.614 cubic feet, ft3
barrels, bbl 0.159 cubic meters, m3
barrels, bbl 42 gallons, gal
British thermal units, Btu 252 calories (gram), g-cal
British thermal units, Btu 777.65 foot pounds, ft-lb
Btu/hr 0.29287 watts, W
calories (gram), g-cal 0.003969 British thermal units, Btu
calories (gram), g-cal 4.183 joules, j
Celsius, (degrees) (C x 9/5) + 32 Fahrenheit (degrees)
centipoise, cp 0.001 newton-sec per sq meter, N-sec/m2
centipoise, cp 0.002089 pound-sec per sq foot, lb-sec/ft2
cubic feet, ft3 0.0370 cubic yards, yd3
cubic feet, ft3 0.0283 cubic meters, m3
cubic feet, ft3 7.4805 gallons, gal
cubic feet, ft3 28.32 liters, l
cubic feet per minute, ft/min 0.4719 liters per second, l/sec
Fahrenheit (degrees) (F-32) x 5/9 Celsius (degrees)
feet, ft 12 inches, in
feet, ft 0.3048 meters, m
feet, ft 30.48 centimeters, cm
feet of water, (head) 0.0295 atmospheres, atm
feet per minute, ft/min 0.5080 centimeters per second, cm/sec
feet per minute, ft/min 0.0183 kilometers per hour, km/hr
feet per minute, ft/min 0.0114 miles per hour, mi/hr
feet per second, ft/sec 0.6818 miles per hour, mi/hr
feet per minute, ft/min 0.3048 meters per minute, m/min
foot pounds, ft-lb 0.001286 British thermal units, Btu
foot pounds, ft-lb 0.3236 calories (gram), g-cal
foot pounds, ft-lb 1.356 newton meters, Nm
gallons, gal (U.S.) 3785 cubic centimeters, cm3
gallons, gal (U.S.) 0.1337 cubic feet, ft3
gallons, gal (U.S.) 231 cubic inches, in3
gallons, gal (U.S.) 0.003785 cubic meters, m3
gallons, gal (U.S.) 3.7854 liters, l
gallons per minute, gal/min (gpm) 0.0238 barrels per minute, bbl/min
gallons per minute, gal/min (gpm) 0.00223 cubic feet per second, ft3/sec
gallons per minute, gal/min (gpm) 0.003785 cubic meters per minute, m3/min
gallons per minute, gal/min (gpm) 0.0631 liters per second, l/sec
grams per cubic centimeter, g/cm3 62.43 pounds per cubic foot, lb/ft3
grams per cubic centimeter, g/cm3 0.03613 pounds per cubic inch, lb/in3
grams per liter, g/l 0.00834 pounds per gallon, lb/gal
hogsheads (U.S.) 8.422 cubic feet, ft3
horsepower, hp 42.44 Btu per minute, Btu/min
horsepower, hp 746 joules per second, j/sec
horsepower, hp 746 watts, W
inches, in 2.54 centimeters, cm
inches, in 0.0833 feet, ft
inches, in 0.0254 meters, m
inches of mercury, in 0.0333 atmospheres, atm
inches of mercury, in 1.133 feet of water (head)
inches of mercury, in 0.03453 kilograms per sq centimeter, kg/cm2
inches of mercury, in 0.4911 pounds per square inch, lb/in2
inches of water, (4°C) 0.002455 atmospheres, atm
inches of water, (4°C) 0.0361 pounds per square inch, lb/in2
joules, j 0.2391 calories (gram), g-cal
kilograms, kg 2.205 pounds, lb
kilograms, kg 0.001102 tons (short)
kilograms per cubic meter, kg/m3 0.001 grams per cubic centimeter, g/cm3
kilograms per cubic meter, kg/m3 0.06243 pounds per cubic foot, lb/ft3
kilograms per square centimeter, kg/cm2 28.96 inches of mercury, in Hg
kilograms per square centimeter, kg/cm2 32.81 feet of water, ft (head)
kilograms per square centimeter, kg/cm2 14.22 pounds per square inch, lb/in2
kilometers, km 0.6214 miles, mi (statute)
kilometers, km 0.5396 miles, NM (nautical)
kilometers per hour 27.78 centimeters per second, cm/sec
kilometers per hour 54.68 feet per minute, ft/min
kilometers per hour 0.6214 miles per hour, mi/hr
kilopascals, kPa 0.145 pounds per square inch, lb/in2
kilowatts, kW 56.92 Btu per minute, Btu/min
kilowatts, kW 1.341 horsepower, hp
kilowatt-hours, kWh 860.5 kilogram-calories, kg-cal
liters, l 0.2642 gallons, gal
liters, l 0.00629 barrels (oilfield), bbl
liters, l 0.0353 cubic feet, ft3
liters, l 0.001 cubic meters, m3
liters, l 1.057 quarts (U.S.), qt
liters per minute, l/min 0.2642 gallons per minute, gal/min
liters per minute, l/min 0.00629 barrels per minute, bbl/min
meters, m 100 centimeters, cm
meters, m 3.281 feet, ft
meters, m 0.9144 yards, yd
meters per min, m/min 3.281 feet per minute, ft/min
meters per min, m/min 0.060 kilometers per hour, km/hr
meters per min, m/min 0.03728 miles per hour, mi/hr
miles (statute), mi 5280 feet, ft
miles (statute), mi 1609 meters, m
miles (statute), mi 1.609 kilometers, km
miles (statute), mi 0.8690 nautical miles, NM
miles per hour, mi/hr 1.466 feet per second, ft/sec
miles per hour, mi/hr 0.6214 kilometers per hour, km/hr
miles per hour, mi/hr 0.8690 knots, kn
miles per hour, mi/hr 26.82 meters per minute
nautical miles, NM 6076 feet, ft
nautical miles, NM 1852 meters, m
nautical miles, NM 1.151 statute miles, mi
newtons per square meter, N/m2 1 pascals, Pa
ounces, oz 28.35 grams, g
ounces, oz 0.0625 pounds, lb
ounces, oz 0.9115 ounces (troy)
parts per million, ppm 0.0584 grains per gal (U.S.), grain/gal
parts per million, ppm 0.0001 weight percent, wt%
pounds, lb 453.6 grams, g
pounds, lb 0.4356 kilograms, kg
pounds, lb 16 ounces, oz
pounds per gallon, lb/gal 119.8 kilograms per cubic meter, kg/m3
pounds per gallon, lb/gal 7.48 pounds per cubic foot, lb/ft3
pounds per square inch, lb/in2 2.307 feet of water (head)
pounds per square inch, lb/in2 703.1 kilograms per square meter, kg/m2
pounds per square inch, lb/in2 6.897 kilopascals, kPa
pounds per square inch, lb/in2 144 pounds per square foot, lb/ft2
quarts (U.S.), qt 946.3 cubic centimeters, cm3
quarts (U.S.), qt 0.9463 liters, l
quarts (U.S.), qt 0.0334 cubic feet, ft3
quarts (U.S.), qt 57.75 cubic inches, in3
radians 57.30 degrees
square centimeters, cm2 0.001076 square feet, ft2
square centimeters, cm2 0.1550 square inches, in2
square centimeters, cm2 0.0001 square meters, m2
square feet, ft2 929 square centimeters, cm2
square feet, ft2 144 square inches, in2
square feet, ft2 0.0929 square meters, m2
square inches, in2 6.45 square centimeters, cm2
square inches, in2 0.00694 square feet, ft2
square inches, in2 0.000645 square meters, m2
square kilometers, km2 247.1 acres, ac
square kilometers, km2 0.3861 square miles, mi2
square meters, m2 0.000247 acres, ac
square meters, m2 10.76 square feet, ft2
square meters, m2 1.196 square yards, yd2
square yards, yd2 9 square feet, ft2
square yards, yd2 1296 square inches, in2
square yards, yd2 0.8361 square meters, m2
tons (long) 1016 kilograms, kg
tons (long) 2240 pounds, lb
tons (long) 1.016 tons (metric)
tons (long) 1.120 tons (short)
tons (metric) 1000 kilograms, kg
tons (metric) 2204.6 pounds, lb
tons (metric) 0.9841 tons (long)
tons (metric) 1.1023 tons (short)
tons (short) 907.2 kilograms, kg
tons (short) 2000 pounds, lb
tons (short) 0.8929 tons (long)
tons (short) 0.907 tons (metric)
watts, W 3.415 Btu per hour, Btu/hr
watts, W 44.25 foot pounds per minute, ft-lb/min
watts, W 1 joules per second, j/sec
yards, yd 91.44 centimeters, cm
yards, yd 3 feet, ft
yards, yd 36 inches, in
yards, yd 0.000914 kilometers, km
yards, yd 0.9144 meters, m
yards, yd 0.000568 miles, mi

Printable Version | Contact Us | Site MapContributorsLegal | tetratec.com
© 2007 TETRA Technologies, Inc. All rights reserved.