Kilojoules to Joules conversion

Kilojoules (kJ) to joules (J), energy conversion calculator and how to convert.

Kilojoules to joules converter

Enter the energy in kilojoules and press the Convert button:

Enter energy in kilojoules:		kJ
Result in joules:		J

Joules to kilojoules conversion ►

Kilojoules to Joules

One kilojoule is equal to 1,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for 10³. Kilojoules can be abbreviated as kJ; for example, 1 kilojoule can be written as 1 kJ.

The joule is the energy equal to the force on an object of one newton at a distance of one meter. One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as J; for example, 1 joule can be written as 1 J.

How to convert kilojoules to joules

One kilojoules is equal to 1000 joules:

1kJ = 1000J

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

E_(J) = E_(kJ) × 1000

Example

Convert 3 kilojoules to joules.

The energy E in joules (J) is equal to 3 kilojoules times 1000:

E_(J) = 3kJ × 1000 = 3000J