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Conversion Tables
      
Coefficient of Heat Transfer
To convert fromTo
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British thermal unitIT per hour square foot degree Fahrenheit [BtuIT/(h • ft2 • °F)]watt per square meter kelvin [W/(m2 • K)]5.678263e0
British thermal unitth per hour square foot degree Fahrenheit [Btuth/(h • ft2 • °F)]watt per square meter kelvin [W/(m2 • K)]5.674466e0
British thermal unitIT per second square foot degree Fahrenheit [BtuIT/(s · ft2 · °F)]watt per square meter kelvin [W/(m2 · K)]2.044175e4
British thermal unitth per second square foot degree Fahrenheit [Btuth/(s · ft2 · °F)watt per square meter kelvin [W/(m2 · K)]2.042808e4
Density of Heat
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British thermal unitIT per square foot (BtuIT/ft2)joule per square meter (J/m2)1.135653e4
British thermal unitth per square foot (Btuth/ft2)joule per square meter (J/m2)1.134893e4
calorieth per square centimeter (calth/cm2)joule per square meter (J/m2)4.184e4
langley (calth/cm2)joule per square meter (J/m2)4.184e4
Density of Heat Flow Rate
To convert fromTo
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British thermal unitIT per square foot hour [BtuIT/(ft2 · h)]watt per square meter (W/m2)3.154591e0
British thermal unitth per square foot hour [Btuth/(ft2 · h)]watt per square meter (W/m2)3.152481e0
British thermal unitth per square foot minute [Btuth/(ft2 · min)]watt per square meter (W/m2)1.891489e2
British thermal unitIT per square foot second [BtuIT/(ft2 · s)]watt per square meter (W/m2)1.135653e4
British thermal unitth per square foot second [Btuth/(ft2 · s)]watt per square meter (W/m2)1.134893e4
British thermal unitth per square inch second [Btuth/(in 2 · s)]watt per square meter (W/m2)1.634246e6
calorieth per square centimeter minute [calth/(cm2 · min)]watt per square meter (W/m2)6.973333e2
calorieth per square centimeter second [calth/(cm2 · s)]watt per square meter (W/m2)4.184e4
Fuel Consumption
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gallon (U.S.) per horsepower hour [gal/(hp · h)]cubic meter per joule (m3/J)1.410089e-9
gallon (U.S.) per horsepower hour [gal/(hp · h)]liter per joule (L/J)1.410089e-6
mile per gallon (U.S.) (mpg) (mi/gal)meter per cubic meter (m/m3)4.251437e5
mile per gallon (U.S.)(mpg) (mi/gal)kilometer per liter (km/L)4.251437e-1
mile per gallon (U.S.)(mpg) (mi/gal)21liter per 100 kilometer (L/100 km)divide 235.215 by number of miles per gallon
pound per horsepower hour [lb/(hp · h)]kilogram per joule (kg/J)1.689659e-7
Heat Capacity and Entropy
To convert fromTo
Multiply by
British thermal unitIT per degree Fahrenheit (BtuIT/°F)joule per kelvin (J/K)1.899101e3
British thermal unitth per degree Fahrenheit (Btuth/°F)joule per kelvin (J/K)1.897830e3
British thermal unitIT per degree Rankine (BtuIT/°R)joule per kelvin (J/K)1.899101e3
British thermal unitth per degree Rankine (Btuth/°R)joule per kelvin (J/K)1.897830e3
Heat Flow Rate
To convert fromTo
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British thermal unitIT per hour (BtuIT/h)watt (W)2.930711e-1
British thermal unitth per hour (Btuth/h)watt (W)2.928751e-1
British thermal unitth per minute (Btuth/min)watt (W)1.757250e1
British thermal unitIT per second (BtuIT/s)watt (W)1.055056e3
British thermal unitth per second (Btuth/s)watt (W)1.054350e3
calorieth per minute (calth/min)watt (W)6.973333e-2
calorieth per second (calth/s)watt (W)4.184e0
kilocalorieth per minute (kcalth/min)watt (W)6.973333e1
kilocalorieth per second (kcalth/s)watt (W)4.184e3
ton of refrigeration (12 000 BtuIT/h)watt (W)3.516853e3
Specific Heat Capacity and Specific Entropy
To convert fromTo
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British thermal unitIT per pound degree Fahrenheit [BtuIT/(lb · °F)]joule per kilogram kelvin [J/(kg · K)]4.1868e3
British thermal unitth per pound degree Fahrenheit [Btuth/(lb · °F)]joule per kilogram kelvin [J/(kg · K)]4.184e3
British thermal unitIT per pound degree Rankine [BtuIT/(lb · °R)]joule per kilogram kelvin [J/(kg · K)]4.1868e3
British thermal unitth per pound degree Rankine [Btuth/(lb · °R)]joule per kilogram kelvin [J/(kg · K)]4.184e3
calorieIT per gram degree Celsius [calIT/(g · °C)]joule per kilogram kelvin [J/(kg · K)]4.1868e3
calorieth per gram degree Celsius [calth/(g · °C)]joule per kilogram kelvin [J/(kg · K)]4.184e3
calorieIT per gram kelvin [calIT/(g · K)]joule per kilogram kelvin [J/(kg · K)]4.1868e3
calorieth per gram kelvin [calth/(g · K)]joule per kilogram kelvin [J/(kg · K)]4.184e3
Thermal Conductivity
To convert fromTo
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Britsh thermal unitIT foot per hour square foot degree Fahrenheit [BtuIT · ft/(h · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]1.730735e0
Britsh thermal unitth foot per hour square foot degree Fahrenheit [Btuth · ft/(h · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]1.729577e0
Britsh thermal unitIT inch per hour square foot degree Fahrenheit [BtuIT · in/(h · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]1.442279e-1
Britsh thermal unitth inch per hour square foot degree Fahrenheit [Btuth · in/(h · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]1.441314e-1
Britsh thermal unitIT inch per second square foot degree Fahrenheit [BtuIT · in/(s · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]15.192204e2
Britsh thermal unitth inch per second square foot degree Fahrenheit [Btuth · in/(s · ft2 · °F)]joule per kilogram kelvin [J/(kg · K)]5.188732e2
calorieth per centimeter second degree Celsius [calth/(cm · s · °C)]joule per kilogram kelvin [J/(kg · K)]4.184e2
Thermal Diffusivity
To convert fromTo
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square foot per hour (ft2/h)square meter per second (m2/s) 2.58064e-5
Thermal Insulance
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closquare meter kelvin per watt (m2 · K/W)1.55e-1
degree Fahrenheit hour square foot per British thermal unitIT (°F · h · ft2/BtuIT)square meter kelvin per watt (m2 · K/W)1.761102e-1
degree Fahrenheit hour square foot per British thermal unitth (°F · h · ft2/Btuth)square meter kelvin per watt (m2 · K/W)1.762280e-1
Thermal Resistance
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degree Fahrenheit hour per British thermal unitIT (°F · h/BtuIT)kelvin per watt (K/W)1.895634e0
degree Fahrenheit hour per British thermal unitth (°F · h/Btuth)kelvin per watt (K/W)1.896903e0
degree Fahrenheit second per British thermal unitIT (°F · s/BtuIT)kelvin per watt (K/W)5.265651e-4
degree Fahrenheit second per British thermal unitth (°F · s/Btuth)kelvin per watt (K/W)5.269175e-4
Thermal Resistivity
To convert fromTo
Multiply by
degree Fahrenheit hour square foot per British thermal unitIT inch [°F · h · ft2/(BtuIT · in)]meter kelvin per watt (m · K/W)6.933472e0
degree Fahrenheit hour square foot per British thermal unitth inch [°F · h · ft2/(Btuth · in)]meter kelvin per watt (m · K/W)6.938112e4
LENGTH
To convert fromTo
Multiply by
ångström(Å)meter (m)1.0e-10
ångström(Å)nanometer (nm)1.0e-1
astronomical unit (ua)meter (m)1.495979e11
chain (based on U.S. survey foot) (ch)7meter (m)2.011684e1
fathom (based on U.S. survey foot) 7meter (m)1.828804e0
fermimeter (m)1.0e-15
fermifemtometer (fm)1.0e0
foot (ft)meter (m)3.048e-1
foot (U.S. survey) (ft) 7meter (m)3.048006e-1
inch (in)meter (m)2.54e-2
inch (in)centimeter (cm)2.54e0
kayser(K)reciprocal meter (m-1)1e2
light year (l. y.) 18meter (m)9.46073e15
microinchmeter (m)2.54e-8
microinchmicrometer (μm)2.54e-2
micron (μ)micrometer (μm)1.0e0
mil (0.001 in)meter (m)2.54e-5
micron (μ)millimeter (mm)2.54e-2
mile (mi)meter (m)1.609344e3
mile (mi)kilometer (km)1.609344e0
mile (based on U.S. survey foot) (mi) 7meter (m)1.609347e3
mile (based on U.S. survey foot) (mi) 7kilometer (km)1.609347e0
mile,nautical 20meter (m)1.852e3
parsec (pc)meter (m)3.085678e16
pica (computer) (1/6 in)meter (m)4.233333e-3
pica (computer) (1/6 in)millimeter (mm)4.233333e0
pica (printer's)meter (m)4.217518e-3
pica (printer's)millimeter (mm)4.217518e0
point (computer) (1/72 in)meter (m)3.527778e-4
point (computer) (1/72 in)millimeter (mm)3.527778e-1
point (printer's)meter (m)3.514598e-4
point (printer's)millimeter (mm)3.514598e-1
rod (based on U.S. survey foot) (rd) 7meter (m)5.029210e0
yard (yd)meter (m)9.144e-1
      
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