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43 calculators online
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Energy
Energy units converter. Converts joules, calories, many physical, british, american and time related units.
How to convert?
  • Enter the number to field "value" - enter the NUMBER only, no other words, symbols or unit names. You can use dot (.) or comma (,) to enter fractions.
    Examples:
    • 1000000
    • 123,23
    • 999.99999
  • Find and select your starting unit in field "unit".
  • And... you got the result in the table below. You'll find several results for many different units - we show you all results we know at once. Just find the one you need.
value: unit: decimals:



common use

joule [J]
calorie [cal]
kilo-calorie [kcal]
kilowatt-hour [kW·h]

metric (SI)

yottajoule [YJ]
zettajoule [ZJ]
exajoule [EJ]
petajoule [PJ]
terajoule [TJ]
gigajoule [GJ]
megajoule [MJ]
kilojoule [kJ]
hectojoule [hJ]
decajoule [daJ]
joule [J]
decijoule [dJ]
centijoule [cJ]
millijoule [mJ]
microjoule [µJ]
nanojoule [nJ]
picojoule [pJ]
femtojoule [fJ]
attojoule [aJ]
zeptojoule [zJ]
yoctojoule [yJ]

british-american

British thermal unit (thermochemical) [BTUth]
British thermal unit (ISO) [BTUISO]
British thermal unit (63 °F) [BTU63 °F]
British thermal unit (60 °F) [BTU60 °F]
British thermal unit (59 °F) [BTU59 °F]
British thermal unit (International Table) [BTUIT]
British thermal unit (mean) [BTUmean]
British thermal unit (39 °F) [BTU39]
cubic foot of atmosphere [cu ft atm; scf]
cubic yard of atmosphere [cu yd atm; scy]
cubic foot of natural gas
foot-poundal [ft pdl]
foot-pound force [ft lbf]
gallon-atmosphere (US) [US gal atm]
gallon-atmosphere (imperial) [imp gal atm]
inch-pound force [in lbf]
quad
therm (U.S.)
therm (E.C.)

calories related

calorie (20 °C) [cal20 °C]
calorie (thermochemical) [calth]
calorie (15 °C) [cal15 °C]
calorie (International Table) [calIT]
calorie (mean) [calmean]
calorie (3.98 °C) [cal3.98 °C]
kilocalorie; large calorie [kcal; Cal]

physical

atomic unit of energy [au]
Celsius heat unit (International Table) [CHUIT]
cubic centimetre of atmosphere; standard cubic centimetre [cc atm; scc]
electronvolt [eV]
erg (cgs unit) [erg]
litre-atmosphere [l atm]
hartree [Eh]
rydberg [Ry]
thermie [th]

time related

horsepower-hour [hp·h]
watt-second [W·s]
watt-hour [W·h]
kilowatt-second [kW·s]
kilowatt-hour [kW·h]

materials related

barrel of oil equivalent [bboe]
ton of TNT [tTNT]
ton of coal equivalent [TCE]
ton of oil equivalent [TOE]
Links to external sites (leaving Calculla?)
Linking to this site
To link directly to this Calcullator, use one of the links below:
  • energy: http://www.calculla.com/eng/energy
  • cal: http://www.calculla.com/eng/cal
  • kcal: http://www.calculla.com/eng/kcal
  • calories: http://www.calculla.com/eng/calories
Directly to Polish version:
  • energia: http://www.calculla.com/pl/energia
  • kalorie: http://www.calculla.com/pl/kalorie