How many joules are in a kilojoule?

There are 1,000 joules in 1 kilojoule (kJ).

Detailed answer

The SI prefix kilo- means 1,000. Multiply kJ by 1,000 for joules; divide joules by 1,000 for kJ.

Relationship context

Kilojoules appear on some food labels (especially outside the US) and in engineering heat tables.

Quick conversion table

Kilojoule (kj)Joule (j)
0.1100
11,000
22,000
33,000
44,000
55,000
66,000
77,000
88,000
99,000
Kilojoule (kj)Joule (j)
1010,000
2020,000
3030,000
4040,000
5050,000
6060,000
7070,000
8080,000
9090,000
100100,000

More Kilojoules converters

Dedicated pages from Kilojoule to every other hub energy unit (kilocalorie, kilowatt-hour, calorie, joule, kilojoule, watt-hour, BTU, electronvolt).