Joule to Kilojoule converter

1 joule = 0.001 kilojoule1 kilojoule = 1,000 joule


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The result of your conversion between joule and kilojoule appears here

How to convert Joule to Kilojoule

Multiply the value in joule by 0.001 to get the result in kilojoule.

Example: 5 J × 0.001 = 0.005 kJ

Joule to Kilojoule conversion table

JouleKilojoule
0.1 J0.0001 kJ
0.5 J0.0005 kJ
1 J0.001 kJ
2 J0.002 kJ
3 J0.003 kJ
4 J0.004 kJ
5 J0.005 kJ
10 J0.01 kJ
15 J0.015 kJ
20 J0.02 kJ
25 J0.025 kJ
50 J0.05 kJ
100 J0.1 kJ
500 J0.5 kJ
1,000 J1 kJ
KilojouleJoule
0.1 kJ100 J
0.5 kJ500 J
1 kJ1,000 J
2 kJ2,000 J
3 kJ3,000 J
4 kJ4,000 J
5 kJ5,000 J
10 kJ10,000 J
15 kJ15,000 J
20 kJ20,000 J
25 kJ25,000 J
50 kJ50,000 J
100 kJ100,000 J
500 kJ500,000 J
1,000 kJ1,000,000 J

Frequently asked questions

How much is 1 joule in kilojoule?

1 joule = 0.001 kilojoule.

How much is 1 kilojoule in joule?

1 kilojoule = 1,000 joule.

How do I convert joule to kilojoule?

Multiply the value in joule by 0.001 to get the result in kilojoule. Example: 5 J × 0.001 = 0.005 kJ.

About Joule

Joule (J) is a unit of energy.

1 joule = 0.2388459 calorie [I.T.] (cal)
1 calorie [I.T.] = 4.1868 joule

Use the converter above to convert joule into any other unit of energy.

About Kilojoule

Kilojoule (kJ) is a unit of energy.

1 kilojoule = 1,000 joule (J)
1 kilojoule = 238.8459 calorie [I.T.] (cal)
1 joule = 0.001 kilojoule

The SI prefix kilo- stands for 1,000, so 1 kilojoule = 1,000 joule.

Use the converter above to convert kilojoule into any other unit of energy.

Convert joule to other units

attojoule Board of Trade unit Btu Btu [thermochemical] calorie [I.T.] calorie [15° C] Calorie [nutritional] calorie [thermochemical] celsius heat unit centijoule cheval vapeur heure decijoule dekajoule dekawatt hour dekatherm electronvolt erg exajoule exawatt hour femtojoule foot pound foot poundal gallon [UK] of automotive gasoline gallon [U.S.] of automotive gasoline gallon [UK] of aviation gasoline gallon [U.S.] of aviation gasoline gallon [UK] of diesel oil gallon [U.S.] of diesel oil gallon [UK] of distilate #2 fuel oil gallon [U.S.] of distilate #2 fuel oil gallon [UK] of kerosene type jet fuel gallon [U.S.] of kerosene type jet fuel gallon [UK] of LPG gallon [U.S.] of LPG gallon [UK] of naphtha type jet fuel gallon [U.S.] of naphtha type jet fuel gallon [UK] of kerosene gallon [U.S.] of kerosene gallon [UK] of residual fuel oil gallon [U.S.] of residual fuel oil gigaelectronvolt gigacalorie [I.T.] gigacalorie [15° C] gigajoule gigawatt hour gram calorie hartree hectojoule hectowatt hour horsepower hour hundred cubic foot of natural gas inch ounce inch pound kilocalorie [15° C] kilocalorie [I.T.] kilocalorie [thermochemical] kiloelectronvolt kilogram calorie kilogram-force meter kilopond meter kiloton [explosive] kilowatt hour liter atmosphere megaelectronvolt megacalorie [I.T.] megacalorie [15° C] megajoule megalerg megaton [explosive] megawatthour meter kilogram-force microjoule millijoule myriawatt hour nanojoule newton meter petajoule petawatthour pferdestärkenstunde picojoule Q unit quad teraelectronvolt terajoule terawatthour therm [Europe] therm [U.S. (uncommon)] thermie ton [explosive] tonne of coal equivalent tonne of oil equivalent watthour wattsecond yoctojoule yottajoule yottawatthour zeptojoule zettajoule zettawatthour