Useful Conversion Factors

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Last updated 23 September 2018, 14:40

TABLE 15. Common Minerals and Metals

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Conversion Factors
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

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Useful Conversion Factors

TABLE 15. Common Minerals and Metals

Conversion Factors

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