Convert Kilojoules to Joules

Enter the energy in kilojoules below to get the value converted to joules.

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1 kJ = 1,000 J

How to Convert Kilojoules to Joules

To convert a kilojoule measurement to a joule measurement, multiply the energy by the conversion ratio. One kilojoule is equal to 1,000 joules, so use this simple formula to convert:

joules = kilojoules × 1,000

The energy in joules is equal to the kilojoules multiplied by 1,000.

For example, here's how to convert 5 kilojoules to joules using the formula above.
5 kJ = (5 × 1,000) = 5,000 J

Kilojoules and joules are both units used to measure energy. Keep reading to learn more about each unit of measure.

Kilojoules

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.

Joules

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.

Kilojoule Measurements and Equivalent Joule Conversions

Common kilojoule values converted to the equivalent joule value
Kilojoules Joules
1 kJ 1,000 J
2 kJ 2,000 J
3 kJ 3,000 J
4 kJ 4,000 J
5 kJ 5,000 J
6 kJ 6,000 J
7 kJ 7,000 J
8 kJ 8,000 J
9 kJ 9,000 J
10 kJ 10,000 J
11 kJ 11,000 J
12 kJ 12,000 J
13 kJ 13,000 J
14 kJ 14,000 J
15 kJ 15,000 J
16 kJ 16,000 J
17 kJ 17,000 J
18 kJ 18,000 J
19 kJ 19,000 J
20 kJ 20,000 J
21 kJ 21,000 J
22 kJ 22,000 J
23 kJ 23,000 J
24 kJ 24,000 J
25 kJ 25,000 J
26 kJ 26,000 J
27 kJ 27,000 J
28 kJ 28,000 J
29 kJ 29,000 J
30 kJ 30,000 J
31 kJ 31,000 J
32 kJ 32,000 J
33 kJ 33,000 J
34 kJ 34,000 J
35 kJ 35,000 J
36 kJ 36,000 J
37 kJ 37,000 J
38 kJ 38,000 J
39 kJ 39,000 J
40 kJ 40,000 J

More Kilojoule Energy Conversions

Joules
Convert to Megajoules
1 kJ is equal to 0.001 megajoules
Convert to Gigajoules
1 kJ is equal to 1.0E-6 gigajoules
Calories
Convert to Calories
1 kJ is equal to 239.005736 calories
Convert to Kilocalories
1 kJ is equal to 0.239006 kilocalories
Convert to Megacalories
1 kJ is equal to 0.000239 megacalories
Watts x Time
Convert to Watt-hours
1 kJ is equal to 0.277778 watt-hours
Convert to Kilowatt-hours
1 kJ is equal to 0.000278 kilowatt-hours
Convert to Megawatt-hours
1 kJ is equal to 2.7778E-7 megawatt-hours
Convert to Watt-seconds
1 kJ is equal to 1,000 watt-seconds
Thermal Units
Convert to British Thermal Units
1 kJ is equal to 0.947817 british thermal units
Convert to Million BTU
1 kJ is equal to 9.4782E-7 million BTU
Convert to Therms
1 kJ is equal to 9.4782E-6 therms
Convert to Quads
1 kJ is equal to 9.4782E-16 quads
Electronvolts
Convert to Electronvolts
1 kJ is equal to 6,241,499,999,999,999,606,784 electronvolts
Convert to Kiloelectronvolts
1 kJ is equal to 6,241,500,000,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 kJ is equal to 6,241,500,000,000,000 megaelectronvolts