UNITS

Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
acre	x	0.404 69	=	hectare
acre	x	43,560	=	square foot (ft2)
acre	x	4,046.873	=	square meter (m2)
acre	x	640	=	square mile (mi2)
acre	x	4840	=	square yard (yd2)
acre-foot	x	7,758	=	barrel
acre-foot	x	43,560	=	cubic foot (ft3 or cf)
acre-foot	x	1,233	=	cubic meter (m3)
acre-foot	x	325,851	=	gallon (US)
angstrom unit	x	1.0E-10	=	meter (m)
atmosphere	x	1.013	=	bar
atmosphere	x	76.0	=	centimeter of mercury
atmosphere	x	33.90	=	feet of water
atmosphere	x	1.033	=	kilogram/square centimeter
atmosphere	x	101.325	=	kilopascal (kPa)
atmosphere	x	10.33	=	meters of water
atmosphere	x	1,013.25	=	millibar (mb)
atmosphere	x	1.013250E+05	=	pascal (Pa)
atmosphere	x	14.696	=	pound/square inch

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
balthazar (wine)	x	12	=	liter (L)
barrel (crude oil)	x	5.6146	=	cubic foot of crude oil
barrel (crude oil)	x	0.158 987 3	=	cubic meter of crude oil
barrel (crude oil)	x	42	=	gallon of crude oil, US
barrel (crude oil)	x	158.987 294 9	=	liter of crude oil
barrel (crude oil)	x	0.136	=	metric ton of crude oil
barrel (oil)/day	x	0.029 2	=	gallon (US)/minute
barrel (oil)/day	x	1.84	=	cubic centimeter/second
barrel (oil)/day	x	0.159	=	cubic meter (m3)/day
barrel (oil)/day	x	0.159	=	liter/day
barrel (crude oil)	x	0.15	=	short ton of crude oil
barrel, US liquid	x	0.75	=	barrel of crude oil
barrel, US liquid	x	31.5	=	gallon, US
bar	x	0.986 923	=	atmosphere
bar	x	750.0616	=	millimeter of mercury (mmHg)
bar	x	14.50	=	pound/square inch
board foot	x	0.002 360	=	cubic meter (m3)
Board of Trade unit (BOTU)	x	1	=	kilowatt.hour (kW.h) (in the UK)
british thermal unit (BTU)	x	3.931E-04	=	horsepower-hour
british thermal unit (BTU)	x	0.000 292 8	=	kilowatt-hour (kW.h)
BTU	x	778.2	=	foot-pounds
BTU	x	0.000 393 1	=	horsepower.hour (HP.h)
BTU	x	1055	=	joule
BTU/hour square foot °F	x	5.678 263 398	=	watt/square meter °C
BTU/hour square foot °F	x	0.453 592 374 35	=	kilocalorie/hour square foot °C
BTU/minute	x	0.023 56	=	horsepower
BTU/minute	x	0.017 57	=	kilowatt (kW)
BTU/pound	x	0.555 555	=	calorie/gram
BTU/pound	x	2.326	=	kilojoule/kilogram (kJ/kg)
bushel, US	x	0.035 239 07	=	cubic meter (m3)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
calorie (cal)	x	4.186 8	=	joule (J)
caneca (beer, Portugal)	x	0.4	=	liter (L)
carat (metric)	x	200	=	milligram (mg)
centimeter (cm)	x	0.394	=	inch (in)
centimeter of mercury	x	0.44	=	foot of water
centimeter/second	x	0.036	=	kilometer/hour
centimeter/ square second	x	0.032 808 4	=	foot per square second (ft/s2)
centipoise	x	0.01	=	poise
centipoise	x	0.01	=	gram/centimer.second (g/cm.s)
centipoise	x	0.001 0	=	pascal-second
centipoise	x	6.72E-04	=	pound/ft-sec
cord	x	128	=	cubic foot (ft3 or cf)
cubic centimeter (cm3)	x	3.531E-05	=	cubic foot (ft3 or cf)
cubic centimeter (cm3)	x	0.061 02	=	cubic inch (in3)
cubic centimeter (cm3)	x	2.642E-04	=	gallon, US liquid
cubic centimeter (cm3)	x	1.0E-03	=	liter (L)
cubic foot (ft3 or cf)	x	28,320	=	cubic centimeter (cm3)
cubic foot (ft3 or cf)	x	1728	=	cubic inch (in3)
cubic foot (ft3 or cf)	x	7.48	=	gallon, US liquid
cubic foot (ft3 or cf)	x	28.316 8	=	liter (L)
cubic foot (ft3 or cf)	x	2.831685E-02	=	cubic meter
cubic foot (ft3 or cf)	x	0.037037	=	cubic yard (exactly: 1/27)
cubic foot (ft3 or cf)	x	0.1781076	=	oil barrel
cubic foot/minute	x	472	=	cubic centimeter/second
cubic foot/minute	x	4.72E-4	=	cubic meter/second
cubic foot/minute	x	0.12	=	gallon/second
cubic foot/minute	x	1699.011	=	liter/hour
cubic foot/minute	x	0.471 947 4	=	liter/second
cubic foot/second	x	448.8	=	gallons/minute
cubic foot/second	x	1699	=	liters/minute
cubic inch (in3)	x	16.387 06	=	cubic centimeter (cm3)
cubic inch (in3)	x	1.639E-05	=	cubic meter (m3)
cubic inch (in3)	x	4.329E-03	=	gallon (gal)
cubic inch (in3)	x	0.016 387 06	=	liter (L)
cubic meter (m3)	x	35.315	=	cubic foot (ft3 or cf)
cubic meter (m3)	x	1.307 950 619	=	cubic yard (yd3)
cubic meter (m3)	x	264.20	=	gallon, US liquid
cubic meter (m3)	x	1,000	=	liter (L)
cubic meter/hour (m3/h)	x	0.58858	=	cubic foot/min (ft3/min)
cubic meter/kilogram (m3/kg)	x	16.02	=	cubic foot/pound (ft3/lb)
cubic meter/sec (m3/s)	x	15,850	=	gallon/minute
cubic meter/sec (m3/s)	x	2118	=	cubic foot/minute
cubic meter/sec (m3/s)	x	60,000	=	liter/minute
cubic yard (yd3)	x	0.764 554 9	=	cubic meter (m3)
cubic yard (yd3)	x	27	=	cubic foot (ft3 or cf)
cycles/second	x	1.0	=	hertz

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
darcy	x	0.9869E-12	=	meter square
day (mean solar)	x	86,400	=	second (s)
decanewton/meter (daN/m)	x	0.685 068	=	pounds per feet (lbs/ft)
degree (angle)	x	0.0111	=	quadrant
degree (angle)	x	0.017 453 29	=	radian
degree (angle)	x	3,600	=	second (s)
degree (angle)	x	17.777 777 8	=	mil
degree/second	x	0.166 67	=	revolutions/minute (RPM)
degree/second	x	0.017 45	=	radians/second
demi (wine)	x	475	=	milliliter (mL)
drink	x	0.5	=	fluid ounces (US) of alcohol
drink	x	15	=	milliliters of alcohol
dyne	x	1.0E-05	=	joule/meter (newton)
dyne/square centimeter	x	1.0E-06	=	bar

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
em (pica)	x	0.42	=	centimeter (cm)
erg	x	1.0E-07	=	joule (J)
erg	x	2.78E-14	=	kilowatt-hour (kW.h)
erg/second	x	1.3E-10	=	horsepower (hp)
erg/second	x	1.0E-10	=	kilowatt

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
fathom (fath)	x	1.828 8	=	meter (m)
foot (ft)	x	30.48	=	centimeter (cm)
foot (ft)	x	12	=	inch (in)
foot (ft)	x	0.3048	=	meter (m)
foot (ft)	x	1.645E-04	=	mile (nautical)
foot (ft)	x	5280	=	mile (statute)
football field (USA)	x	1.3223	=	acre
football field (USA)	x	0.535	=	hectare (ha)
foot of water	x	0.029 499	=	atmosphere of water
foot of water	x	0.882 6	=	inch of mercury
foot of water	x	0.433 515	=	pound/square inch
foot/minute	x	0.508 0	=	centimeter/second
foot/second	x	1.097 28	=	kilometer/hour
foot/second	x	0.592 48	=	knot
foot/second	x	0.681 818	=	mile/hour
foot-candles	x	10.763 91	=	candela-meter
foot-candles	x	10.763 91	=	lumen/square meter
foot-candles	x	10.763 91	=	lux
foot-candles	x	1.5759E-06	=	watt/square centimeter (W/cm2)
foot-pound (ft-lb)	x	3.77E-07	=	kilowatt-hour (kW.h)
foot-pound (ft-lb)	x	0.138 255	=	kilogram-meter (kg.m)
foot-pound (ft-lb)	x	1.355 818 2	=	newton-meter (N.m)
foot-pound/minute	x	2.26E-05	=	kilowatt (kW)
foot-pound/sec	x	0.001 81	=	horsepower
freight ton (US)	x	40.0	=	cubic foot
furlong	x	1/8	=	mile (statute)
furlong	x	200	=	yard (yd)
furlong/fortnight	x	1	=	snail's pace (you figure it out)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
gallon, US (gal)	x	231	=	cubic inch (in3)
gallon, US (gal)	x	0.031 75	=	barrel
gallon, US (gal)	x	0.023 81	=	barrel of crude oil
gallon, US (gal)	x	3,785.41	=	cubic centimeter (cm3)
gallon, US (gal)	x	0.133 7	=	cubic foot (ft3 or cf)
gallon, US (gal)	x	3.785412E-03	=	cubic meter (m3)
gallon, US (gal)	x	0.832 675	=	gallon, imperial
gallon, US (gal)	x	3.785 412	=	liter (L)
gallon, liquid British imperial	x	4.546 09	=	liter (L)
gallon, liquid British imperial	x	1.201 4	=	gallon, US liquid
gallon of crude oil	x	0.023 809 52	=	barrel of crude oil
gallon/minute, US	x	8.020 8	=	cubic foot/hour
gallon/minute, US	x	0.134	=	cubic foot/minute
gallon/minute, US	x	6.309E-05	=	cubic meter/sec
gallon/minute, US	x	0.06309	=	liter/sec
gallon/minute, US	x	227.1247	=	liter/hour
gallon/minute, US	x	5450.993	=	liter/day
gauss	x	1.0E-04	=	weber/square meter
girafa (beer, Portugal)	x	1.0	=	liter (L)
googol	x	10E+100	=	1 followed by 100 zeros
grain	x	0.064798 91	=	gram (g)
grain	x	437.5	=	ounce
gram (g)	x	0.0353	=	ounce
gram (g)	x	2.204623E-03	=	pound (lb)
gram/centimeter	x	5.6E-03	=	pound/inch
gram/cubic centimeter	x	62.43	=	pound/cubic foot
gram/cubic centimeter	x	8.347	=	pound/gallon
gram/liter	x	1,000	=	parts/million
gram/liter	x	8.34	=	pound/1,000 gallon
gram/liter	x	0.062 43	=	pound/cubic foot
gram/square centimeter	x	2.048 16	=	pound/square foot
gram-calorie	x	1.56E-06	=	horsepower-hour
gram-calorie	x	1.16E-06	=	kilowatt-hour (kW.h)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
hectare (ha)	x	2.471	=	acre
hectare (ha)	x	107,600	=	square foot (ft2)
hectare (ha)	x	10,000	=	square meter (m2)
hectare (ha)	x	0.003 861	=	square mile (sq.mi)
horsepower (hp)	x	1.014	=	horsepower (metric)
horsepower (hp)	x	42.44	=	british thermal unit/minute
horsepower (hp)	x	550	=	foot-pound/second
horsepower-hour (hp-hr)	x	2.684520E+6	=	joule (J)
horsepower (hp)	x	0.746 043	=	kilowatt (kW)
horsepower (hp), electrical	x	746	=	watt (W)
horsepower (metric)	x	0.986	=	horsepower
horsepower (metric)	x	542.5	=	foot-pound/second
hundredweight (cwt) (UK)	x	112	=	pound
hundredweight (cwt) (UK)	x	50.802 345	=	kilogram (kg)
hundredweight (cwt) (US)	x	100	=	pound
hundredweight (cwt) (US)	x	45.359 237	=	kilogram (kg)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
ice (1 pound, melting)	x	151	=	kilojoule (kJ)
imperial (beer, Portugal)	x	0.2	=	liter (L), aka 'fino' in Portugal
inch (in)	x	2.54	=	centimeter (cm)
inch (in)	x	0.025 4	=	meter (m)
inch (in)	x	1.578E-05	=	mile (mi)
inch-pound	x	0.112 985	=	joule (J)
inch of mercury	x	0.4912	=	pound/square inch
inch of mercury	x	3386.4	=	pascal (Pa)
inch of water at (4 oC)	x	2.458E-03	=	atmosphere
inch of water at (4 oC)	x	0.03	=	pound/square inch
iron (leather)	x	1/48	=	inch (in)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
jeroboam	x	3	=	liter (L), (aka 'double magnum')
joule (J)	x	9.48E-04	=	british thermal unit (BTU)
joule (J)	x	0.737 563	=	foot-pound (ft-lb)
joule (J)	x	0.000 239	=	kilocalorie (kcal (IT))
joule (J)	x	1.00	=	newton-meter (N.m)
joule (J)	x	2.778E-04	=	watt-hour (W.h)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
kilogram (kg)	x	2.204 623	=	pound (lb)
kilogram (kg)	x	9.84E-04	=	ton, long
kilogram (kg)	x	1.1E-03	=	ton, metric (t)
kilogram (kg)	x	35.273 962	=	ounce (oz)
kilogram/cubic meter	x	0,062 428	=	pound/cubic foot
kilogram/meter	x	0.67197	=	pound/foot
kilogram/meter	x	0.980 855 9	=	decanewton/meter (daN/m)
kilogram/meter second	x	10	=	poise
kilogram/square centimeter	x	0.967 8	=	atmosphere
kilogram/square centimeter	x	14.223	=	pound/square inch
kilogram/square meter	x	9.81E-05	=	bar
kilogram-meter	x	2.72E-06	=	kilowatt-hour (kW.h)
kilometer (km)	x	3,280.84	=	foot (ft)
kilometer (km)	x	0.621 4	=	mile (mi)
kilometer/hour	x	0.911 34	=	foot/second
kilometer/hour	x	0.539 95	=	knot (kn)
kilometer/hour	x	0.621 37	=	mile/hour
kilopascal (kPa)	x	0.009 869	=	atmosphere
kilopascal (kPa)	x	0.010 000	=	bar
kilopascal (kPa)	x	0.145 038	=	pound/square inch
kilopascal (kPa)	x	0.010 197	=	kilogram/sq. centimeter (kg/cm2)
kilopascal (kPa)	x	7.500 617	=	millimeter of mercury (mmHg)
kilowatt (kW)	x	1.341	=	horsepower (hp)
kilowatt (kW)	x	1,000	=	watt (W)
kilowatt-hour (kW.h)	x	3,413	=	british thermal unit (BTU)
kilowatt-hour (kW.h)	x	859.8	=	kilocalorie
kilowatt-hour (kW.h)	x	3.6	=	megajoule (MJ)
kip (kilopound)	x	1,000	=	pound
kip (kilopound)	x	453.6	=	kilogram (kg)
knot (kn)	x	0.515	=	meter/second (m/s)
knot (kn)	x	1.0	=	mile (nautical)/h
knot (kn)	x	1.152	=	mile (statute)/h
knot (kn)	x	1852	=	kilometer/hour (km/h)
knot (kn)	x	1.152	=	mile (statute)/h

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
lambda	x	1.0	=	cubic milliliter (mm3)
liter (L)	x	0.006 3	=	barrel of oil
liter (L)	x	0.008 4	=	barrel
liter (L)	x	0.035 315	=	cubic foot (ft3 or cf)
liter (L)	x	61.02	=	cubic inch (in3)
liter (L)	x	0.2642	=	gallon (US)
liter (L)	x	0.219	=	gallon (UK)
liter (L)	x	1.056	=	quart (US)
liter (L)	x	2.1134	=	pint (US)
liter (L)	x	33.814	=	ounce, fluid (fl oz) (US)
liter/sec (L/s)	x	2.12	=	cubic foot/min (ft3/min)
liter/100 km	x	2.12	=	cubic foot/min (ft3/min)
long ton	x	1,016.047	=	kilogram (kg)
long ton	x	1.016 047	=	metric ton (t)
long ton	x	2,240	=	pound (lb)
long ton	x	1.12	=	short ton (st)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
magnum	x	1.500	=	liter (L)
marathon	x	42 195	=	meter
marathon	x	26 miles 385 yards	=	(Imperial units)
measurement ton (US)	x	40.00	=	cubic foot
melchior (champagne)	x	18	=	liter (L)
meter (m)	x	3.281	=	foot (ft)
meter (m)	x	0.546 807	=	fathom (fath)
meter (m)	x	39.370 079	=	inch (in)
meter (m)	x	6.21E-04	=	mile (statute)
meter/second	x	2.237	=	mile (statute)/hour
meter/second	x	196.8	=	foot/minute
meter/second	x	3.6	=	kilometer/hour (km/h)
meter/second	x	1.942	=	knot (kn)
meter per square second(m/s2)	x	3.280 839 9	=	foot per square second (ft/s2)
methuselah (champagne)	x	6	=	liter (L), aka 'imperial'
metric carat	x	200	=	milligram (mg)
metric grain	x	50	=	milligram (mg)
metric mile (athletics)	x	1500	=	meter (m)
metric ton (t)	x	1,000	=	kilogram (kg)
metric ton (t)	x	2,204.62	=	pound (lb)
metric ton (t)	x	1.1023	=	short ton (st)
metric ton of crude oil	x	7.33	=	barrel (bbl)
micrometer (µm)	x	1.0E-06	=	meter (m)
mils (angle)	x	0.056 25	=	degree (angle)
mil (mili-inch)	x	0.001	=	inch (in)
mil (mili-inch)	x	25.4	=	micrometer (µm)
mile, nautical	x	1,852	=	meter (m)
mile, statute	x	161,000	=	centimeter (cm)
mile, statute	x	5,280	=	foot (ft)
mile, statute	x	1.609 347	=	kilometer (km)
mile, statute	x	1,609	=	meter (m)
mile, statute	x	0.868 975	=	mile, nautical
miles/gallon (US) (mpg)	x	0.4251	=	kilometer/liter (km/L)
mile/hour	x	44.70	=	centimeter/second
mile/hour	x	1.466 7	=	foot/second
meter (m)	x	3.281	=	foot
meter (m)	x	6.21E-04	=	mile (statute)
millibar (mb)	x	1,0	=	hectopascal (hPa)
millibar (mb)	x	100	=	pascal (Pa)
milliliter (mL)	x	0.0338	=	ounce, fluid (fl oz)
millimeter (mm)	x	0.039 37	=	inch
millimeter of mercury (mmHg)	x	1	=	torr
millimeter of water	x	9.81	=	pascal (Pa)
milligram/liter	x	1	=	parts/million
million gallon/day	x	1.547 2	=	cubic foot/second
minute (angle)	x	0.016 7	=	degree

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
nautical mile (nmi, NM)	x	1,852	=	meter (m)
nebuchadnezzar (wine)	x	15	=	liter (L)
newton (N)	x	0.101 972	=	kg (force)
newton (N)	x	0.224 81	=	pound force
newton (N)	x	100,000	=	dyne
newton-meter (N.m, N·m)	x	0.737 562	=	pound-foot (lb-ft)
newton-meter (N.m, N·m)	x	0.101 971 6	=	kilogram-meter (kg.m)
newton-meter (N.m, N·m)	x	8.850 747 5	=	inch-pound (in-lb)
newton.second/square meter	x	10	=	poise
normal cubic meter (Nm3)	x	1.0	=	1 m3 of gas @ 0 °C (32 °F) and 1 atm.
normal cubic meter (Nm3)	x	37.326	=	standard cubic feet (SCF) @ 60 °F and 1 atm.
nose	x	0,5	=	length of a horse's head

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
olympiad	x	4	=	years
ounce (oz)	x	28.34	=	gram (g)
ounce (oz)	x	0.0625	=	pound (lb)
ounce, fluid (fl oz)	x	1.8	=	cubic inch
ounce, fluid (fl oz)	x	0.029 57	=	liter (L)
ounce, fluid (fl oz)	x	29.573 53	=	milliliter (mL)
ounce, troy (oz)	x	31.103 5	=	gram (g)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
pascal	x	1	=	newton/sq meter
pascal	x	9.871E-06	=	atmosphere
pascal	x	0.01	=	millibar (mb)
pascal second (Pa·s)	x	10	=	poise
parts/million	x	8.34	=	pound/million gallon (gal)
pat of butter (USA)	x	9.45	=	gram
pat of butter (USA)	x	0.333 333	=	ounce
pferdestärke (ps)	x	735.499	=	watt (W)
pint, US liquid	x	0.125	=	gallon, US (gal)
pint, US liquid	x	16	=	fluid ounce (US)
pint, US liquid	x	0.473 1	=	liter (L)
pipa (Portugal)	x	500	=	liter (L)
poise (P)	x	1	=	gram/centimeter second
poundal	x	13,826	=	dyne
pound (lb)	x	4.45E+05	=	dyne
pound (lb)	x	453.59	=	gram (g)
pound (lb)	x	4.5359E-04	=	ton (metric)
pound (lb)	x	4.448	=	joule/meter (newton)
pound (lb)	x	0.45359237	=	kilogram (kg)
pound (lb)	x	16	=	ounce (oz)
pound of water	x	27.68	=	cubic inch (in3)
pound of water	x	0.119 83	=	gallon (gal)
pound/barrel	x	2.853	=	kg/m3
pound/barrel	x	2.38	=	pounds/100 gallons (US)
pounds/100 gallons (US)	x	1.2	=	kg/m3
pound/cubic foot	x	0.133 7	=	pound/gallon (US)
pound/cubic foot	x	0.006 944	=	pound/sq inch/foot (psi/ft)
pound/cubic foot	x	0.016 026	=	gram/cubic centimeter
pound/cubic foot	x	16.018 5	=	kilogram/cubic meter
pound/cubic inch	x	27.68	=	gram/cubic centimeter
pound/cubic inch	x	27,680	=	kilogram/cubic meter
pound-foot	x	1.488 2	=	kilogram-meter
pound-inch	x	178.60	=	gram-centimeter
pound/gallon (ppg)	x	0.120 05	=	specific gravity
pound/gallon (ppg)	x	0.052	=	pound/sq inch/foot (psi/ft)
pound/gallon (ppg)	x	7.48	=	pound/cubic foot
pound/gallon (ppg)	x	0.119 8	=	gram/cubic centimeter
pound/gallon (UK)	x	99 776.3712192	=	milligram/liter
pound/gallon (UK)	x	99 890.3461041	=	part/million (ppm)
pound/gallon (UK)	x	0.832 674 127 478	=	pound/gallon (US)
pound/gallon (US)	x	119 826.433 807	=	milligram/liter
pound/gallon (US)	x	119 963.311 946	=	part/million (ppm)
pound/gallon (US)	x	1.200 950 007 93	=	pound/gallon (UK)
pound/square inch	x	0.068 046	=	atmosphere
pound/square inch	x	0.068947	=	bar
pound/square inch	x	2.309 5	=	foot of water
pound/square inch	x	2.036 02	=	inch of mercury
pound/square inch	x	51.71475	=	millimeter of mercury (mmHg)
pound/square inch	x	0.070 307	=	kilogram/square centimeter
pound/square inch	x	703.069 6	=	kilogram/square meter
pound/square inch	x	6.894757E+03	=	pascal
pound/square inch	x	144	=	pound/square foot
pound/sq inch/foot (psi/ft)	x	19.23	=	pound/gallon (US)
pound/sq inch/foot (psi/ft)	x	144	=	pound/cubic foot
pound/sq inch/foot (psi/ft)	x	2.309 5	=	specific gravity

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
Q unit	x	1.0E+18	=	british thermal unit (btu)
quadrant, angle	x	90	=	degree
quadrant, angle	x	1.570 8	=	radian
quart (gallon)	x	0.946	=	liter (L)
quart (gallon)	x	32	=	ounce (fluid)
quart, liquid	x	57.75	=	cubic inch (in3)
quart, liquid	x	9.46E-04	=	cubic meter (m3)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
radian	x	57.29	=	degree
radian	x	3,438	=	minutes
radian	x	206,000	=	second
revolution	x	360	=	degree
revolution	x	4	=	quadrant
revolution	x	6.283 185	=	radian
rods	x	5.5	=	yard (yd)
round (boxing)	x	3	=	minute

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
salmanazar (wine)	x	9	=	liter (L)
second-foot	x	1.0	=	cubic foot/min (ft3/min)
second (angle)	x	2.78E-04	=	degree
second (angle)	x	4.848137E-06	=	radian
short ton (st)	x	0.892 9	=	long ton
short ton (st)	x	0.907 184 7	=	metric ton (t)
short ton (st)	x	2,000	=	pound (lb)
short ton of crude oil	x	6.65	=	barrel (bbl)
specific gravity	x	1	=	gram/cubic centimeter
specific gravity	x	0.433	=	pound/sq inch/foot (psi/ft)
specific gravity	x	8.33	=	pound/gallon (US)
specific gravity	x	350.5	=	pound/barrel
specific gravity	x	62.4	=	pound/cubic foot
square centimeter (cm2)	x	1.08E-03	=	square foot (ft2)
square centimeter (cm2)	x	0.155 0	=	square inch (in2)
square inch (in2)	x	6.451 6	=	square centimeter
square foot (ft2)	x	2.2956E-05	=	acre
square foot (ft2)	x	929.03	=	square centimeter (cm2)
square foot (ft2)	x	144	=	square inch (in2)
square foot (ft2)	x	0.092 903 04	=	square meter (m2)
square foot (ft2)	x	3.59E-08	=	square mile (mi2)
square foot (ft2), US Survey	x	1.000004	=	square foot (ft2)
square foot (ft2), US Survey	x	0.092 903	=	square meter (m2)
square kilometer (km2)	x	247.105	=	acre
square kilometer (km2)	x	100	=	hectare
square kilometer (km2)	x	0.386 1	=	square mile (mi2)
square meter (m2)	x	2.471E-04	=	acre
square meter (m2)	x	10.763 915	=	square foot (ft2)
square meter (m2)	x	10.763 867	=	square foot (ft2) (US Servey)
square meter (m2)	x	3.86E-07	=	square mile (mi2)
square meter (m2)	x	1,195 99	=	square yard (yd2)
square mile (mi2)	x	640	=	acre
square mile (mi2)	x	27,900,000	=	square foot (ft2)
square mile (mi2)	x	2.589 988	=	square kilometer (km2)
square yard (yd2)	x	9.0	=	square foot (ft2)
square yard (yd2)	x	0.836 127	=	square meter (m2)
stack	x	108	=	cubic foot (ft3 or cf)
standard cubic meter (Sm3)	x	1	=	1 m3 of gas @ 60 °F and 1 atm.
stone (UK only)	x	14	=	pounds

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
therm	x	100,000	=	BTU of natural gas
therm	x	1.054804E+08	=	joule (J)
toc (tons of coal equivalent)	x	29.308	=	gigajoule (GJ)
toc (tons of coal equivalent)	x	8.141	=	megawatt-hour (MW.h)
toe (tons of oil equivalent)	x	42.244	=	gigajoule (GJ)
toe (tons of oil equivalent)	x	11.63	=	megawatt-hour (MW.h)
tonne	x	1.0	=	ton, metric
ton (air conditioning)	x	12,000	=	british thermal unit/hour (BTU/h)
ton, gross (shipping)	x	100	=	cubic foof (of enclosed space)
ton, long	x	1,016.047	=	kilogram (kg)
ton, long	x	1.016 047	=	metric ton (t)
ton, long	x	2,240	=	pound (lb)
ton, long	x	1.12	=	short ton (st)
ton, maritime, shipping, or measurement (UK)	x	42	=	cubic foot (ft3 or cf)
ton, maritime, shipping, or measurement (USA)	x	40	=	cubic foot (ft3 or cf)
ton, metric (t)	x	7.33	=	barrel of crude oil
ton, metric (t)	x	1,000	=	kilogram (kg)
ton, metric (t)	x	2,204.62	=	pound (lb)
ton, short (st)	x	6.65	=	barrel of crude oil
ton, short (st)	x	0.892 9	=	long ton
ton, short (st)	x	0.907 184 7	=	metric ton (t)
ton, short (st)	x	2,000	=	pound (lb)
ton, register	x	100	=	cubic foot (ft3 or cf)
ton, register (RT)	x	2.832	=	cubic meter (m3)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
unit call (UC)	x	100	=	call-second/h
unit case (soft drinks)	x	6.0	=	quart (US)
unit of blood	x	450	=	milliliter (mL)
unit of heroin	x	700	=	gram

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
volumetric unit (vu)	x	200	=	cubic foot (of wood chips)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
watch	x	4.0	=	hour
water (1 quart, boiling)	x	3.0	=	megajoule (MJ)
watt (W)	x	3.412 19	=	british thermal unit/hour
watt (W)	x	0.001 341	=	horsepower (hp)
watt (absolute)	x	1	=	joule/second
watt-hour (W.h)	x	3.412 19	=	british thermal unit (BTU)
watt-hour (W.h)	x	2,656	=	foot-pound
watt-hour (W.h)	x	3.60	=	kilojoule (kJ)
weeks	x	168	=	hour
whole note (music)	x	1	=	semibreve
word	x	5.0	=	character (including spaces)
word	x	0.1	=	line (60 character)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
X unit (Siegbahn unit)	x	1.0021E-13	=	meter (m)

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Original Unit	Multiplied By	Conversion Factor	Equals	Final Unit
yard (yd)	x	3.0	=	foot (ft)
yard (yd)	x	36	=	inch (in)
yard (yd)	x	0.914 40	=	meter (m)
yard (yd)	x	1760	=	mile (statute)
years (mean of 4-year period)	x	365.25	=	day
years (mean of 4-year period)	x	8,766	=	hour
years (mean of 4-year period)	x	526,000	=	minute (time)
years (mean of 4-year period)	x	31,558,150	=	second (time)
years (mean of 4-year period)	x	52.17	=	week

 

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Prefixes of the International System of Units (SI)

Numerical Value	Prefix	Symbol	Meaning	Exponential Expression
1 000 000 000 000 000 000	exa	E	Quintillion	1018
1 000 000 000 000 000	peta	P	Quadrillion	1015
1 000 000 000 000	tera	T	Trillion	1012
1 000 000 000	giga	G	Billion	109
1 000 000	mega	M	Million	106
1 000	kilo	k	Thousand	103
100	hecto	h	Hundred	102
10	deca / deka	da	Ten	101
1				100
0.1	deci	d	one-tenth	10-1
0.01	centi	c	one-hundredth	10-2
0.001	milli	m	one-thousandth	10-3
0.000 001	micro	µ	one-millionth	10-6
0.000 000 001	nano	n	one-billionth	10-9
0.000 000 000 001	pico	p	one-trillionth	10-12
0.000 000 000 000 001	femto	f	one-quadrillionth	10-15
0.000 000 000 000 000 001	atto	a	one-quintillionth	10-18
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