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Energy Conversion Table

Base units are marked in black.
Derived units are marked in gray
Conversion Table: Energy
Unit Name Relation to joule [J]
atomic unit of energy [Eh] 4.359744E-18 [J]
barrel of oil 6.117863E+9 [J]
BTU [59°F, British Thermal Unit] 1054.804 [J]
BTU [international, British Thermal Unit] 1055.05585262 [J]
BTU [ISO, British Thermal Unit] 1054.5 [J]
BTU [mean, British Thermal Unit] 1055.87 [J]
BTU [thermochemical, British Thermal Unit] 1054.35026444 [J]
calorie [cal][15°C] 4.1852 [J]
calorie [cal][20°C] 4.182 [J]
calorie [cal][international] 4.1868 [J]
kilocalorie 4186.8 [J]
calorie [cal][international 1929] 4.18604651162791 [J]
calorie [cal][international 1956] 4.1868 [J]
calorie [cal][mean] 4.19 [J]
calorie [cal][thermochemical] 4.184 [J]
celsius heat unit [CHU][thermochemical] 1899.100534716 [J]
cubic foot of atmosphere 2869.2044809344 [J]
cubic foot of natural gas 1.055056E+6 [J]
cubic meter of atmosphere 1.01325E-4 [J]
cubic yard of atmosphere 7.746852E+4 [J]
electronvolt [eV] 1.602176E-19 [J]
erg [erg][CGS] 1E-7 [J]
foot pound [ft lbf] 1.3558179483314 [J]
foot-pound force [ft lbf] 1.3558179483314 [J]
foot-poundal [ft pdl] 0.0421401100938048 [J]
gallon atmosphere [gal atm][imperial] 460.63256925 [J]
gallon atmosphere [gal atm][US] 383.5568490138 [J]
hartree [Eh] 4.359744E-18 [J]
horsepower hour [hp h] 2.647796E+6 [J]
inch-pound force [in lbf] 0.112984829027617 [J]
joule [J] 1 [J]
millijoule 0.001 [J]
kilojoule 1000 [J]
megajoule 1E+6 [J]
large calorie [Gcal] 4186.8 [J]
liter atmosphere [l atm] 101.325 [J]
quad 1.05435E+18 [J]
rydberg [Ry] 2.179872E-18 [J]
therm [EC] 1.05435E+8 [J]
therm [US] 1.054804E+8 [J]
thermie 4.1868E+6 [J]
ton of coal 2.9288E+10 [J]
ton of oil 4.184E+10 [J]
ton of tnt [tTNT] 4.184E+9 [J]
watt hour [Wh] 3600 [J]
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