# Kilojoules (kJ) to Joules (J) Conversion Calculator and Table

Kilojoules and joules are units of energy, and their conversions are simple and straightforward - one just has to remember that "k" stands for "kilo," which is, according to the SI prefixes table, 103 (one thousand) of the main value.

Published: January 5, 2024.

To convert kilojoules to joules, write the value in kilojoules and click 'Calculate':

### Kilojoules (kJ) to Joules (J)

Kilojoules (kJ):

Joules (J):

To convert Joules to kilojoules, check our Joules (J) to Kilojoules (kJ) Conversion Calculator and Table article.

## How To Convert Kilojoules (kJ) to Joules (J)

"k" stands for "kilo" and means "one thousand."  Thus, one kilojoule equals 1000 joules:

1kJ = 1000J

For example, if You want to convert 15.34 kJ to Joules, You can write:

E(kJ) = 15.34 kJ = 15.34 * 1000J = 15340J

## Kilojoules (kJ) to Joules (J) Conversion Table

The following chart contains the most common Kilojoules (kJ) values converted to Joules (J):

 Kilojoules (kJ) Joules (J) 0.01 10 0.1 100 0.25 250 0.5 500 1 1000 2 2000 3 3000 5 5000 10 10000 50 50000 100 100000

If You wish to convert values that are not in the table, please use the kilojoules to Joules conversion calculator.

## How much is 1kJ or 1000J of energy?

To get the feeling of how much 1kJ or 1000J of energy is, here is an example of a 1000W heater:

If you have a 1000W heater, that heater releases 1000J or 1kJ of energy every second. And to power such a heater, you would need:

• @12V: 1000W / 12V = 83.3A
• @120V: 1000W / 120V = 8.33A
• @220V: 1000W / 220V = 4.54A

These values are calculated using Ohm's Law.