Convert J To KJ

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Please provide values below to convert joule [J] to kilojoule [kJ], or vice versa.

From:	joule
To:	kilojoule

Joule

Definition: A joule (symbol: J) is a derived unit of energy in the International System of Units (SI). It is defined as the energy transferred to an object when a one newton force is applied to the object in the direction of its motion through a distance of one meter. It is also defined as the energy dissipated as heat when a 1 ampere electric current passes through a resistance of one ohm in the course of one second. It has a number of representations both in SI base units as well as other SI units such that:

J = kg·m2/s2 = N·m = Pa·m3 = W·s = C·V

History/origin: The unit, joule, is named after James Prescott Joule, an English physicist and mathematician who helped develop the Kelvin scale. He also discovered the relationship between heat and mechanical work, leading to the law of conservation of energy, and subsequently, the first law of thermodynamics.

Current use: As an SI derived unit, the joule is used within a variety of scientific contexts. Practical examples of energy measurement using joules include the energy required to lift objects, the energy released when objects fall, the heat required to raise temperature, and the kinetic energy of moving objects.

One of the dimensional representations of a joule is the N·m (Newton-meter), which is equivalent to the SI unit for torque. These units however, are different, and should be considered as such. Even though the joule is algebraically equal to the N·m, the N·m should not be used to represent the joule whenever possible, to avoid confusion with torque.

Kilojoule

Definition: The kilojoule is an SI (International System of Units) derived unit of energy that is equal to 1000 joules. The joule is defined as the amount of energy transferred to an object when a one newton force acts on an object in the direction movement through a distance of one meter.

History/origin: The kilojoule, like other SI derived units, uses SI prefixes to denote multiples or submultiples of the given unit. In this case, the prefix "kilo" is used to express a multiple of 1000.

Current use: In countries that have adopted SI, the kilojoule is widely used as a unit of food energy. In some cases, both kilojoules and kilocalories are displayed, though in countries such as the United States, only kilocalories are shown (often referred to as "Calories") on food labels. Aside from this everyday use, kilojoules are used within scientific contexts around the world.

Joule to Kilojoule Conversion Table

Joule [J]	Kilojoule [kJ]
0.01 J	1.0E-5 kJ
0.1 J	0.0001 kJ
1 J	0.001 kJ
2 J	0.002 kJ
3 J	0.003 kJ
5 J	0.005 kJ
10 J	0.01 kJ
20 J	0.02 kJ
50 J	0.05 kJ
100 J	0.1 kJ
1000 J	1 kJ

How to Convert Joule to Kilojoule

1 J = 0.001 kJ1 kJ = 1000 J

Example: convert 15 J to kJ:15 J = 15 × 0.001 kJ = 0.015 kJ

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Convert Joule to Other Energy Units

Joule to Kilowatt-hourJoule to Watt-hourJoule to Calorie (nutritional)Joule to Horsepower (metric) HourJoule to Btu (IT)Joule to Btu (th)Joule to BreakJoule to GigajouleJoule to MegajouleJoule to MillijouleJoule to MicrojouleJoule to NanojouleJoule to AttojouleJoule to Megaelectron-voltJoule to Kiloelectron-voltJoule to Electron-voltJoule to ErgJoule to Gigawatt-hourJoule to Megawatt-hourJoule to Kilowatt-secondJoule to Watt-secondJoule to Newton MeterJoule to Horsepower HourJoule to Kilocalorie (IT)Joule to Kilocalorie (th)Joule to Calorie (IT)J to calJoule to Mega Btu (IT)Joule to Ton-hour (refrigeration)Joule to Fuel Oil Equivalent @kiloliterJoule to Fuel Oil Equivalent @barrel (US)Joule to GigatonJoule to MegatonJoule to KilotonJoule to Ton (explosives)Joule to Dyne CentimeterJoule to Gram-force MeterJoule to Gram-force CentimeterJoule to Kilogram-force CentimeterJoule to Kilogram-force MeterJoule to Kilopond MeterJoule to Pound-force FootJoule to Pound-force InchJoule to Ounce-force InchJoule to Foot-poundJoule to Inch-poundJoule to Inch-ounceJoule to Poundal FootJoule to ThermJoule to Therm (EC)Joule to Therm (US)Joule to Hartree EnergyJoule to Rydberg Constant