Joule to Kilojoule

1 J = 0.001 kJ

One joule equals 0.001 kilojoules, and one kilojoule equals 1,000 joules.

Joule to Kilojoule formula

kJ = J × 0.001

To convert joules to kilojoules, multiply the value by 0.001. One joule equals 0.001 kilojoules.

Step-by-step examples

Convert 1 joules to kilojoules

  1. 1Start with the value in joules: 1 J.
  2. 2Multiply by the conversion factor 0.001.
  3. 31 × 0.001 = 0.001 kJ.

Result: 1 J = 0.001 kJ

Convert 10 joules to kilojoules

  1. 1Start with the value in joules: 10 J.
  2. 2Multiply by the conversion factor 0.001.
  3. 310 × 0.001 = 0.01 kJ.

Result: 10 J = 0.01 kJ

Convert 100 joules to kilojoules

  1. 1Start with the value in joules: 100 J.
  2. 2Multiply by the conversion factor 0.001.
  3. 3100 × 0.001 = 0.1 kJ.

Result: 100 J = 0.1 kJ

Joule to Kilojoule conversion table

Joule (J)Kilojoule (kJ)
0.010.00001
0.10.0001
0.50.0005
10.001
20.002
30.003
40.004
50.005
100.01
200.02
250.025
500.05
1000.1
2500.25
5000.5
10001

Joule to Kilojoule chart

00.002500.005000.007500.010 J10 J

J (horizontal) vs kJ (vertical)

Batch convert — paste multiple values

Related converters

Reverse: Kilojoule to Joule

Frequently asked questions

How many kilojoules are in a joule?

There are 0.001 kilojoules in one joule (1 J = 0.001 kJ).

How do you convert joules to kilojoules?

To convert joules to kilojoules, multiply the value by 0.001. One joule equals 0.001 kilojoules.

What is 10 joules in kilojoules?

10 joules equals 0.01 kilojoules.

How many joules are in a kilojoule?

One kilojoule equals 1,000 joules (1 kJ = 1,000 J).