kilojoule to joule

Live kilojoule (kJ) to joule (J) converter. Plus a 10-value reference table and FAQs.

kilojoule
joule
1 kJ = 1,000J

Conversion table

Ten sample values from kilojoule to joule. Use the converter above for arbitrary values.

kilojoule (kJ)joule (J)
0.001 kJ 1 J
0.01 kJ 10 J
0.1 kJ 100 J
0.5 kJ 500 J
1 kJ 1,000 J
2 kJ 2,000 J
5 kJ 5,000 J
10 kJ 10,000 J
100 kJ 100,000 J
1,000 kJ 1,000,000 J

About the kilojoule

1000 J. Food labels in some countries.

About the joule

SI unit of energy. 1 N·m.

Frequently asked questions

Frequently Asked Questions

How do I convert kilojoule to joule?

Multiply the kilojoule value by 1,000 to get it in joule. For example, 10 kJ = 10,000 J.

What is 1 kJ in J?

1 kJ = 1,000 J.

What is 100 kJ in J?

100 kJ = 100,000 J.

What is the formula?

Linear: multiply by 1,000 (the unit factor ratio).

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