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Energy
kcal to J
21 Kilocalorie to Joule
Convert 21 Kilocalories to Joules
21 Kilocalories (kcal)
1 kcal = 4,184.1 J
=
87,866.11 Joules (J)
1 J = 2.4e-04 kcal
Data Energy converter
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Barrel of Oil Equivalent
Billion Barrel of Oil Equivalent
Billion Electron Volt
British Thermal Unit
British Thermal Unit
British Thermal Unit (39 °F)
British Thermal Unit (59 °F)
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Calorie (15 °C)
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Electronvolt
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Thermie
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Thousand Dekatherms (US)
Ton of Coal Equivalent
Ton of Oil Equivalent
Ton of TNT
Watt Hour
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Yottaelectron Volt
Yottajoule
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To:
Barrel of Oil Equivalent
Billion Barrel of Oil Equivalent
Billion Electron Volt
British Thermal Unit
British Thermal Unit
British Thermal Unit (39 °F)
British Thermal Unit (59 °F)
British Thermal Unit (60 °F)
British Thermal Unit (63 °F)
British Thermal Unit (ISO)
Btu Mean
Calorie
Calorie (15 °C)
Calorie (20 °C)
Calorie (3.98 °C)
Calorie (international table)
Calorie (mean)
Celsius Heat Unit
Cubic Centimetre of Atmosphere
Cubic Foot of Atmosphere
Cubic Foot of Natural Gas
Cubic Mile of Oil
Cubic Yard of Atmosphere
Dekatherm (EC)
Dekatherm (UK)
Dekatherm (US)
Electronvolt
Electron Volt
Erg
European Electrical Horsepower
Exaelectron Volt
Exajoule
Foot Poundal
Foot Pound Force
Gallon-Atmosphere
Gallon-Atmosphere (imperial)
Gigaelectron Volt
Gigajoule
Gigawatt Hour
Hartree
Horsepower Hour
Inch-Pound Force
Joule
Kilocalorie
Kiloelectron Volt
Kilogram-force Meter
Kilojoule
Kilowatt-Hour
Litre-Atmosphere
Mega Calorie
Megaelectron Volt
Megajoule
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Microjoule
Millijoule
Million Barrels of Oil Equivalent
Million British Thermal Units
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Million Dekatherms (US)
Nanojoule
Newton Meters
Petaelectron Volt
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Picojoule
Quad
Rydberg
Tablespoon of Oil Equivalent
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Terajoule
Terawatt Hour
Therm (E.C.)
Thermie
Therm (UK)
Therm (U.S.)
Thousand Barrels of Oil Equivalent
Thousand British Thermal Units
Thousand Dekatherms (EC)
Thousand Dekatherms (UK)
Thousand Dekatherms (US)
Ton of Coal Equivalent
Ton of Oil Equivalent
Ton of TNT
Watt Hour
Watt Second
Yottaelectron Volt
Yottajoule
Zettaelectron Volt
Zettajoule
Convert
Convert:
(Please enter a number)
From:
Barrel of Oil Equivalent
Billion Barrel of Oil Equivalent
Billion Electron Volt
British Thermal Unit
British Thermal Unit
British Thermal Unit (39 °F)
British Thermal Unit (59 °F)
British Thermal Unit (60 °F)
British Thermal Unit (63 °F)
British Thermal Unit (ISO)
Btu Mean
Calorie
Calorie (15 °C)
Calorie (20 °C)
Calorie (3.98 °C)
Calorie (international table)
Calorie (mean)
Celsius Heat Unit
Cubic Centimetre of Atmosphere
Cubic Foot of Atmosphere
Cubic Foot of Natural Gas
Cubic Mile of Oil
Cubic Yard of Atmosphere
Dekatherm (EC)
Dekatherm (UK)
Dekatherm (US)
Electronvolt
Electron Volt
Erg
European Electrical Horsepower
Exaelectron Volt
Exajoule
Foot Poundal
Foot Pound Force
Gallon-Atmosphere
Gallon-Atmosphere (imperial)
Gigaelectron Volt
Gigajoule
Gigawatt Hour
Hartree
Horsepower Hour
Inch-Pound Force
Joule
Kilocalorie
Kiloelectron Volt
Kilogram-force Meter
Kilojoule
Kilowatt-Hour
Litre-Atmosphere
Mega Calorie
Megaelectron Volt
Megajoule
Megawatt Hour
Microjoule
Millijoule
Million Barrels of Oil Equivalent
Million British Thermal Units
Million Dekatherms (EC)
Million Dekatherms (UK)
Million Dekatherms (US)
Nanojoule
Newton Meters
Petaelectron Volt
Petajoule
Picojoule
Quad
Rydberg
Tablespoon of Oil Equivalent
Teraelectron Volt
Terajoule
Terawatt Hour
Therm (E.C.)
Thermie
Therm (UK)
Therm (U.S.)
Thousand Barrels of Oil Equivalent
Thousand British Thermal Units
Thousand Dekatherms (EC)
Thousand Dekatherms (UK)
Thousand Dekatherms (US)
Ton of Coal Equivalent
Ton of Oil Equivalent
Ton of TNT
Watt Hour
Watt Second
Yottaelectron Volt
Yottajoule
Zettaelectron Volt
Zettajoule
To:
Barrel of Oil Equivalent
Billion Barrel of Oil Equivalent
Billion Electron Volt
British Thermal Unit
British Thermal Unit
British Thermal Unit (39 °F)
British Thermal Unit (59 °F)
British Thermal Unit (60 °F)
British Thermal Unit (63 °F)
British Thermal Unit (ISO)
Btu Mean
Calorie
Calorie (15 °C)
Calorie (20 °C)
Calorie (3.98 °C)
Calorie (international table)
Calorie (mean)
Celsius Heat Unit
Cubic Centimetre of Atmosphere
Cubic Foot of Atmosphere
Cubic Foot of Natural Gas
Cubic Mile of Oil
Cubic Yard of Atmosphere
Dekatherm (EC)
Dekatherm (UK)
Dekatherm (US)
Electronvolt
Electron Volt
Erg
European Electrical Horsepower
Exaelectron Volt
Exajoule
Foot Poundal
Foot Pound Force
Gallon-Atmosphere
Gallon-Atmosphere (imperial)
Gigaelectron Volt
Gigajoule
Gigawatt Hour
Hartree
Horsepower Hour
Inch-Pound Force
Joule
Kilocalorie
Kiloelectron Volt
Kilogram-force Meter
Kilojoule
Kilowatt-Hour
Litre-Atmosphere
Mega Calorie
Megaelectron Volt
Megajoule
Megawatt Hour
Microjoule
Millijoule
Million Barrels of Oil Equivalent
Million British Thermal Units
Million Dekatherms (EC)
Million Dekatherms (UK)
Million Dekatherms (US)
Nanojoule
Newton Meters
Petaelectron Volt
Petajoule
Picojoule
Quad
Rydberg
Tablespoon of Oil Equivalent
Teraelectron Volt
Terajoule
Terawatt Hour
Therm (E.C.)
Thermie
Therm (UK)
Therm (U.S.)
Thousand Barrels of Oil Equivalent
Thousand British Thermal Units
Thousand Dekatherms (EC)
Thousand Dekatherms (UK)
Thousand Dekatherms (US)
Ton of Coal Equivalent
Ton of Oil Equivalent
Ton of TNT
Watt Hour
Watt Second
Yottaelectron Volt
Yottajoule
Zettaelectron Volt
Zettajoule
Convert
More information from the unit converter
Q: How many Kilocalories in a Joule?
The answer is
2.4e-04
Joule
Q: How do you convert 21 Kilocalorie (kcal) to Joule (J)?
21 Kilocalorie is equal to 87,866.11 Joule. Formula to convert 21 kcal to J is
21 * 4184.10041841
Q: How many Kilocalories in 21 Joules?
The answer is
5.0e-03
Kilocalories
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