Marks Calc

kilojoules to joules

Convert kilojoule to joule — instant, free, with the formula shown.

1 kJ=1000 J

How to convert kilojoule to joule

To convert kilojoule to joule, multiply by 1000:

J = kJ × 1000

For example, 10 kJ × 1000 = 10000 J.

kJ to J conversion table

kilojoules (kJ)joules (J)
1 kJ1000 J
2 kJ2000 J
5 kJ5000 J
10 kJ10000 J
25 kJ25000 J
50 kJ50000 J
100 kJ100000 J
250 kJ250000 J
500 kJ500000 J
1000 kJ1000000 J
Reverse: Joule to Kilojoule

Other kilojoule conversions

Convert to joule from another unit

kJ to J — frequently asked

How many joules are in 1 kilojoule?

1 kilojoule = 1000 joules (kJ × 1000 = J).

What is the formula to convert kilojoule to joule?

Multiply your kilojoule value by 1000 to get joule.

How do I convert 10 kilojoules to joules?

10 kJ = 10000 J. For 100 kJ the answer is 100000 J. Use the calculator on this page for any other value.

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