Energy
system unit code
(alternative)
abbreviation notes sample
default conversion
combinations
SI иоттаjoule YJ ИJ 1.0 ИJ (2.4×1023 cal)
зеттаjoule ZJ ИJ 1.0 ИJ (2.4×1020 cal)
эксаjoule EJ ЭJ 1.0 ЭJ (2.4×1017 cal)
петаjoule PJ ПJ 1.0 ПJ (2.4×1014 cal)
тераjoule TJ ТJ 1.0 ТJ (2.4×1011 cal)
гигаjoule GJ ГJ 1.0 ГJ (240,000,000 cal)
мегаjoule MJ МJ 1.0 МJ (240,000 cal)
килоjoule kJ кJ 1.0 кJ (240 cal)
гектоjoule hJ гJ 1.0 гJ (24 cal)
декаjoule daJ даJ 1.0 даJ (2.4 cal)
joule J J 1.0 J (0.24 cal)
детсиjoule dJ дJ 1.0 дJ (0.024 cal)
сантиjoule cJ сJ 1.0 сJ (0.0024 cal)
миллиjoule mJ мJ 1.0 мJ (0.00024 cal)
микроjoule μJ (uJ) мкJ 1.0 мкJ (2.4×10−7 cal)
наноjoule nJ нJ 1.0 нJ (2.4×10−10 cal)
пикоjoule pJ пJ 1.0 пJ (2.4×10−13 cal)
фемтоjoule fJ фJ 1.0 фJ (2.4×10−16 cal)
аттоjoule aJ аJ 1.0 аJ (2.4×10−19 cal)
зептоjoule zJ зJ 1.0 зJ (2.4×10−22 cal)
иоктоjoule yJ иJ 1.0 иJ (2.4×10−25 cal)
cgs megaerg Merg Merg 1.0 Merg (0.10 J)
kiloerg kerg kerg 1.0 kerg (0.10 мJ)
erg erg (none) 1.0 erg (0.10 мкJ)
millierg merg merg 1.0 merg (0.00010 мкJ)
microerg μerg µerg 1.0 µerg (0.00010 нJ)
microerg uerg µerg 1.0 µerg (0.00010 нJ)
Watt-hour multiples terawatt-hour TWh TWh 1.0 TWh (3.6 ПJ)
TW.h
(TW·h, TW-h)
TW·h
gigawatt-hour GWh GWh 1.0 GWh (3.6 ТJ)
GW.h
(GW·h, GW-h)
GW·h
megawatt-hour MWh MWh 1.0 MWh (3.6 ГJ)
MW.h
(MW·h, MW-h)
MW·h
kilowatt-hour kWh kWh 1.0 kWh (3.6 МJ)
kW.h
(kW·h, kW-h)
kW·h
watt-hour Wh Wh 1.0 Wh (3.6 кJ)
W.h
(W·h, W-h)
W·h
milliwatt-hour mWh mWh 1.0 mWh (3.6 J)
mW.h
(mW·h, mW-h)
mW·h
microwatt-hour μWh (uWh) µWh 1.0 µWh (3.6 мJ)
μW.h
(uW·h, μW.h, uW.h, μW-h, uW-h)
µW·h
Electronvolt multiples petaelectronvolt PeV PeV 1.0 PeV (0.16 мJ)
teraelectronvolt TeV TeV 1.0 TeV (0.16 мкJ)
gigaelectronvolt GeV GeV 1.0 GeV (0.16 нJ)
megaelectronvolt MeV MeV 1.0 MeV (0.16 пJ)
kiloelectronvolt keV keV 1.0 keV (0.16 фJ)
electronvolt eV eV 1.0 eV (0.16 аJ)
millielectronvolt meV meV 1.0 meV (0.16 зJ)
microelectronvolt μeV (ueV) µeV 1.0 µeV (0.16 иJ)
nanoelectronvolt neV neV 1.0 neV (0.00016 иJ)
picoelectronvolt peV peV 1.0 peV (1.6×10−7 иJ)
femtoelectronvolt feV feV 1.0 feV (1.6×10−10 иJ)
Calorie multiples calorie Cal (Calorie) Cal 1.0 Cal (4.2 кJ)
megacalorie Mcal Mcal 1.0 Mcal (4.2 МJ)
kilocalorie kcal kcal 1.0 kcal (4.2 кJ)
calorie cal cal 1.0 cal (4.2 J)
millicalorie mcal mcal 1.0 mcal (4.2 мJ)
Calorie (thermochemical) Cal-th (kg-cal-th) Calth 1.0 Calth (4.2 кJ)
megacalorie (thermochemical) Mcal-th (g-cal-th) Mcalth 1.0 Mcalth (4.2 МJ)
kilocalorie (thermochemical) kcal-th (g-cal-th) kcalth 1.0 kcalth (4.2 кJ)
calorie (thermochemical) cal-th (g-cal-th) calth 1.0 calth (4.2 J)
millicalorie (thermochemical) mcal-th (g-cal-th) mcalth 1.0 mcalth (4.2 мJ)
Calorie (15°C) Cal-15 (kg-cal-15) Cal15 1.0 Cal15 (4.2 кJ)
megacalorie (15°C) Mcal-15 (g-cal-15) Mcal15 1.0 Mcal15 (4.2 МJ)
kilocalorie (15°C) kcal-15 (g-cal-15) kcal15 1.0 kcal15 (4.2 кJ)
calorie (15°C) cal-15 (g-cal-15) cal15 1.0 cal15 (4.2 J)
millicalorie (15°C) mcal-15 (g-cal-15) mcal15 1.0 mcal15 (4.2 мJ)
Calorie (International Steam Table) Cal-IT (kg-cal-IT) CalIT 1.0 CalIT (4.2 кJ)
megacalorie (International Steam Table) Mcal-IT (g-cal-IT) McalIT 1.0 McalIT (4.2 МJ)
kilocalorie (International Steam Table) kcal-IT (g-cal-IT) kcalIT 1.0 kcalIT (4.2 кJ)
calorie (International Steam Table) cal-IT (g-cal-IT) calIT 1.0 calIT (4.2 J)
millicalorie (International Steam Table) mcal-IT (g-cal-IT) mcalIT 1.0 mcalIT (4.2 мJ)
pound/ounce-foot/
inch-hour-minute-second
foot-poundal ftpdl ft·pdl 1.0 ft·pdl (0.042 J)
foot-pound force ftlbf ft·lbf 1.0 ft·lbf (1.4 J)
ftlb-f ft·lbf
foot-pound ftlb ft·lb
inch-pound force inlbf in·lbf 1.0 in·lbf (110 мJ)
inlb-f in·lbf
inch-pound inlb in·lb
inch-ounce force inozf in·ozf 1.0 in·ozf (7.1 мJ)
inoz-f in·ozf
horsepower-hour hph hp·h 1.0 hp·h (0.75 kWh)
British thermal unit multiples British thermal unit Btu Btu 1.0 Btu (1.1 кJ)
BTU BTU
MBtu[convert: unknown unit] MBtu (none) 1.0 MBtu[convert: unknown unit]
e3BTU BTU
million British thermal units MMBtu MMBtu 1.0 MMBtu (1.1 ГJ)
e6BTU BTU
British thermal unit (IT) Btu-IT BtuIT 1.0 BtuIT (1.1 кJ)
BTU-IT BTUIT
MBtu-IT[convert: unknown unit] MBtu-IT (none) 1.0 MBtu-IT[convert: unknown unit]
MBTU-IT MBTU-IT[convert: unknown unit]
MMBtu-IT[convert: unknown unit] MMBtu-IT (none) 1.0 MMBtu-IT[convert: unknown unit]
MMBTU-IT MMBTU-IT[convert: unknown unit]
British thermal unit (thermochemical) Btu-th Btuth 1.0 Btuth (1.1 кJ)
BTU-th BTUth
MBtu-th[convert: unknown unit] MBtu-th (none) 1.0 MBtu-th[convert: unknown unit]
MBTU-th MBTU-th[convert: unknown unit]
MMBtu-th[convert: unknown unit] MMBtu-th (none) 1.0 MMBtu-th[convert: unknown unit]
MMBTU-th MMBTU-th[convert: unknown unit]
British thermal unit (ISO) Btu-ISO BTUISO 1.0 BTUISO (1.1 кJ)
BTU-ISO BTUISO
MBtu-ISO[convert: unknown unit] MBtu-ISO (none) 1.0 MBtu-ISO[convert: unknown unit]
MBTU-ISO MBTU-ISO[convert: unknown unit]
MMBtu-ISO[convert: unknown unit] MMBtu-ISO (none) 1.0 MMBtu-ISO[convert: unknown unit]
MMBTU-ISO MMBTU-ISO[convert: unknown unit]
British thermal unit (39°F) Btu-39F Btu39°F 1.0 Btu39°F (1.1 кJ)
BTU-39F BTU39°F
MBtu-39F[convert: unknown unit] MBtu-39F (none) 1.0 MBtu-39F[convert: unknown unit]
MBTU-39F MBTU-39F[convert: unknown unit]
MMBtu-39F[convert: unknown unit] MMBtu-39F (none) 1.0 MMBtu-39F[convert: unknown unit]
MMBTU-39F MMBTU-39F[convert: unknown unit]
British thermal unit (59°F) Btu-59F Btu59°F 1.0 Btu59°F (1.1 кJ)
BTU-59F BTU59°F
MBtu-59F[convert: unknown unit] MBtu-59F (none) 1.0 MBtu-59F[convert: unknown unit]
MBTU-59F MBTU-59F[convert: unknown unit]
MMBtu-59F[convert: unknown unit] MMBtu-59F (none) 1.0 MMBtu-59F[convert: unknown unit]
MMBTU-59F MMBTU-59F[convert: unknown unit]
British thermal unit (60°F) Btu-60F Btu60°F 1.0 Btu60°F (1.1 кJ)
BTU-60F BTU60°F
MBtu-60F[convert: unknown unit] MBtu-60F (none) 1.0 MBtu-60F[convert: unknown unit]
MBTU-60F MBTU-60F[convert: unknown unit]
MMBtu-60F[convert: unknown unit] MMBtu-60F (none) 1.0 MMBtu-60F[convert: unknown unit]
MMBTU-60F MMBTU-60F[convert: unknown unit]
British thermal unit (63°F) Btu-63F Btu63°F 1.0 Btu63°F (1.1 кJ)
BTU-63F BTU63°F
MBtu-63F[convert: unknown unit] MBtu-63F (none) 1.0 MBtu-63F[convert: unknown unit]
MBTU-63F MBTU-63F[convert: unknown unit]
MMBtu-63F[convert: unknown unit] MMBtu-63F (none) 1.0 MMBtu-63F[convert: unknown unit]
MMBTU-63F MMBTU-63F[convert: unknown unit]
British thermal unit (mean) Btu-mean Btumean 1.0 Btumean (1.1 кJ)
BTU-mean BTUmean
MBtu-mean[convert: unknown unit] MBtu-mean (none) 1.0 MBtu-mean[convert: unknown unit]
MBTU-mean MBTU-mean[convert: unknown unit]
MMBtu-mean[convert: unknown unit] MMBtu-mean (none) 1.0 MMBtu-mean[convert: unknown unit]
MMBTU-mean MMBTU-mean[convert: unknown unit]
quadrillion British thermal units quad quad assumes the 59 °F Btu and the "long scale" quadrillion (1015) 1.0 quad (1.1 ЭJ)
therm (EC) thm-EC thm (EC) 1.0 thm (EC) (110 МJ)
therm (UK) thm-UK thm (UK) 1.0 thm (UK) (110 МJ)
therm (US) thm-US thm (US) 1.0 thm (US) (110 МJ)
TNT-based units teratonne of TNT TtTNT (none) 1.0 teratonne of TNT (4.2 ИJ)
teraton of TNT TtonTNT (none)
gigatonne of TNT GtTNT (none) 1.0 gigatonne of TNT (4.2 ЭJ)
gigaton of TNT GtonTNT (none)
megatonne of TNT MtTNT (none) 1.0 megatonne of TNT (4.2 ПJ)
megaton of TNT MtonTNT Mt
kilotonne of TNT ktTNT (none) 1.0 kilotonne of TNT (4.2 ТJ)
kiloton of TNT ktonTNT kt
tonne of TNT tTNT (none) 1.0 tonne of TNT (4.2 ГJ)
ton of TNT tonTNT (none)
kilogram of TNT kgTNT (none) 1.0 kilogram of TNT (4.2 МJ)
millitonne of TNT mtTNT (none)
milliton of TNT mtonTNT (none)
gram of TNT gTNT (none) 1.0 gram of TNT (4.2 кJ)
microtonne of TNT μtTNT (utTNT) (none)
microton of TNT μtonTNT (utonTNT) (none)
oil-based units gigatonne of oil equivalent Gtoe Gtoe 1.0 Gtoe (42 ЭJ)
megatonne of oil equivalent Mtoe Mtoe 1.0 Mtoe (42 ПJ)
kilotonne of oil equivalent ktoe ktoe 1.0 ktoe (42 ТJ)
tonne of oil equivalent toe toe 1.0 toe (42 ГJ)
kilo barrel of oil equivalent kBOE (kbboe) kBOE 1.0 kBOE (6.1 ТJ)
barrel of oil equivalent BOE BOE 1.0 BOE (6.1 ГJ)
atmospheric-pressure-based units cubic metre-atmosphere m3atm m3·atm 1.0 m3·atm (100 кJ)
standard cubic centimetre scc scc 1.0 scc (100 мJ)
cubic centimetre-atmosphere cm3atm cm3·atm
ccatm cc·atm
gigalitre-atmosphere Glatm Gl·atm 1.0 Gl·atm (100 ГJ)
GLatm GL·atm
megalitre-atmosphere Mlatm Ml·atm 1.0 Ml·atm (100 МJ)
MLatm ML·atm
kilolitre-atmosphere klatm kl·atm 1.0 kl·atm (100 кJ)
kLatm kL·atm
standard litre sl sl 1.0 sl (100 J)
litre-atmosphere latm l·atm
Latm L·atm
millilitre-atmosphere mlatm l·atm 1.0 l·atm (100 мJ)
mLatm L·atm
microlitre-atmosphere μlatm (ulatm) µl·atm 1.0 µl·atm (100 мкJ)
μLatm (uLatm) µL·atm
standard cubic yard scy scy 1.0 scy (77 кJ)
cubic yard of atmosphere cuydatm cu yd atm
standard cubic foot scf (scfoot) scf long code "scfoot and cufootatm" outputs standard cubic foot and cubic foot of atmosphere respectively (and never feet) 1.0 scf (2.9 кJ)
cubic foot of atmosphere cuftatm (cufootatm) cu ft atm
imperial gallon-atmosphere impgalatm imp gal·atm 1.0 imp gal·atm (460 J)
US gallon-atmosphere USgalatm (usgalatm) US gal·atm 1.0 US gal·atm (380 J)
U.S.galatm (usgalatm) U.S. gal·atm
Other foe foe (none) 1051 ergs 1.0 foe (1.0×1020 ИJ)
Board of Trade Unit B.O.T.U. B.O.T.U. an obsolete UK synonym for kilowatt-hour 1.0 B.O.T.U. (3.6 МJ)
Celsius heat unit (International Table) CHU-IT CHUIT 1 BTUIT × 1 °C/°F 1.0 CHUIT (1.9 кJ)
thermie th th 1 McalIT 1.0 th (4.2 МJ)
Hartree Eh (Hartree) Eh 1.0 Eh (27 eV)
rydberg Ry Ry 1.0 Ry (14 eV)
cubic foot of natural gas cuftnaturalgas
(cufootnaturalgas)
(none) long code "cufootnaturalgas" outputs cubic foot of natural gas (and never feet) 1.0 cubic foot of natural gas (1.1 МJ)