⚡ Energy & Calories

Convert joules to kilojoules (Energy)

1 J = 0.001 kJ. Convert joules to kilojoules instantly with the converter below.

Value

Result —

How to convert

Divide the value (J) by 1,000 to get kJ — example: 5 J = 0.005 kJ

Conversion table

Joules to kilojoules conversion table
Joule	Kilojoule
1 J	0.001 kJ
2 J	0.002 kJ
5 J	0.005 kJ
10 J	0.01 kJ
50 J	0.05 kJ
100 J	0.1 kJ
250 J	0.25 kJ
500 J	0.5 kJ
1,000 J	1 kJ
2,000 J	2 kJ

About the units

Joule — symbol J.
Kilojoule — symbol kJ.

Frequently asked questions

How many kilojoules are in 1 joule?

1 J = 0.001 kJ.

How do I convert joules to kilojoules?

Divide the value (J) by 1,000 to get kJ.

How many joules are in 1 kilojoule?

1 kJ = 1,000 J.

Is the conversion accurate?

Yes. It uses the standard international conversion factors and runs entirely in your browser, uploading no data.

Related conversions

Reverse: kilojoules to joules

Joules to other units

joules to calories joules to kilocalories joules to watt-hours joules to kilowatt-hours joules to BTU

Other units to kilojoules

calories to kilojoules kilocalories to kilojoules watt-hours to kilojoules kilowatt-hours to kilojoules BTU to kilojoules

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