Joules to Kilojoules conversion

How to convert joules to kilojoules

One joule is equal to thousandth of a kilojoule:

1J = 0.001kJ

The energy in kilojoules E_(kJ) is equal to the energy in joules E_(J) divided by 1000:

E_(kJ) = E_(J) / 1000

Example

Convert 500 joules to kilojoules.

The energy E in kilojoules (kJ) is equal to 500 joules (J) divided by 1000:

E_(kJ) = 500J / 1000 = 0.5kJ

Joules to kilojoules conversion table