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Abbreviation Unit 1 Base Unit
feV femtoelectronvolt 1.602176487E-34
peV picoelectronvolt 1.602176487E-31
neV nanoelectronvolt 1.602176487E-28
ueV microelectronvolt 1.602176487E-25
meV millielectronvolt 1.602176487E-22
ceV centielectronvolt 1.602176487E-21
deV decielectronvolt 1.602176487E-20
eV electronvolt 1.602176487E-19
aJ attojoule 1E-18
keV kiloelectronvolt 1.602176487E-16
fJ femtojoule 1E-15
fcal[th] femtocalorie 4.184E-15
MeV megaelectronvolt 1.602176487E-13
pJ picojoule 1E-12
pcal[th] picocalorie 4.184E-12
GeV gigaelectronvolt 1.602176487E-10
nJ nanojoule 1E-09
ncal[th] nanocalorie 4.184E-09
erg erg 1E-07
TeV teraelectronvolt 1.602176487E-07
uJ microjoule 1E-06
ucal[th] millionth of calorie 4.184E-06
mJ millijoule 0.001
mcal[th] thousandth of calorie 0.004184
cJ centijoule 0.01
ccal[th] hundredth of calorie 0.04184
dJ decijoule 0.1
EeV exaelectronvolt 0.1602176487
dcal[th] tenth of calorie 0.4184
J joule 1
cal[th] calorie 4.184
cal[IT] calorie [International Table] 4.1868
kJ kilojoule 1000
Btu[th] thermochemical British thermal unit 1054.35026448889
Btu[UK] United Kingdom British thermal unit 1055.05585257348
Btu[IT] British thermal unit 1055.05585262
kcal[th] thousand calorie 4184
MJ megajoule 1000000
hp[metric].h metric-horsepower hour 2647795.5
hp.h horsepower hour 2684519.53769617
kW.h kilowatt hour 3600000
Mcal[th] million calorie 4184000
therm[US] United States therm 105480400
therm[UK] United Kingdom therm 105505585.257348
therm[EC] European Community therm 105506000
GJ gigajoule 1000000000
MW.h megawatt hour 3600000000
Gcal[th] thousand million calorie 4184000000
TJ terajoule 1000000000000
GW.h gigawatt hour 3600000000000
Tcal[th] million million calorie 4184000000000
TW.h terrawatt hour 3.6E+15
EJ exajoule 1E+18
quad quad 1.05505585262E+18
Ecal[th] million million million calorie 4.184E+18

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