Energy Converter

Kilojoule to Joule
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Converting between kilojoules and joules is essential in physics, nutrition, electrical engineering, and heating calculations. Energy units bridge different domains: joules in physics, calories in nutrition, kilowatt-hours in electricity, and BTUs in heating.

Also convert to: J MJ cal kcal Wh kWh BTU

0.40585 kj = 405.85 j

0.40585 (zero) kilojoule(s) is equal to 405.85 (four hundred and five) joule(s)

What is kilojoule?

The kilojoule (kJ) equals 1,000 joules. It is used in nutrition labelling in many countries and for measuring the energy content of foods, chemical reactions, and industrial processes.

What is joule?

The joule (J) is the SI unit of energy. It is defined as the work done by a force of one newton acting through a distance of one metre. Joules measure mechanical, electrical, and thermal energy.

How to convert kj to j

To convert Kilojoule to Joule, multiply the value by 1000.
0.40585 kj × 1000 = 405.85 j

Common Conversions

kj j (Joule) Description
1 kJ 1000 J 1 Kilojoule(s) = 1000 Joule(s)
2 kJ 2000 J 2 Kilojoule(s) = 2000 Joule(s)
5 kJ 5000 J 5 Kilojoule(s) = 5000 Joule(s)
10 kJ 10000 J 10 Kilojoule(s) = 10000 Joule(s)
25 kJ 25000 J 25 Kilojoule(s) = 25000 Joule(s)
50 kJ 50000 J 50 Kilojoule(s) = 50000 Joule(s)
100 kJ 100000 J 100 Kilojoule(s) = 100000 Joule(s)
250 kJ 250000 J 250 Kilojoule(s) = 250000 Joule(s)
500 kJ 500000 J 500 Kilojoule(s) = 500000 Joule(s)
1000 kJ 1000000 J 1000 Kilojoule(s) = 1000000 Joule(s)
2500 kJ 2500000 J 2500 Kilojoule(s) = 2500000 Joule(s)
5000 kJ 5000000 J 5000 Kilojoule(s) = 5000000 Joule(s)
10000 kJ 10000000 J 10000 Kilojoule(s) = 10000000 Joule(s)

Convert Kilojoule to other units

kj Unit Description
0.40585 kJ 405.85 J Joule
0.40585 kJ 0.000406 MJ Megajoule
0.40585 kJ 97.000478 cal Calorie
0.40585 kJ 0.097 kcal Kilocalorie
0.40585 kJ 0.112736 Wh Watt-hour
0.40585 kJ 0.000113 kWh Kilowatt-hour
0.40585 kJ 0.384672 BTU British thermal unit

More Joule conversions

1 kJ 2 kJ 3 kJ 4 kJ 5 kJ 6 kJ 7 kJ 8 kJ 9 kJ 10 kJ 11 kJ 12 kJ 13 kJ 14 kJ 15 kJ 16 kJ 17 kJ 18 kJ 19 kJ 20 kJ 25 kJ 30 kJ 40 kJ 50 kJ 60 kJ 70 kJ 80 kJ 90 kJ 100 kJ 200 kJ 300 kJ 500 kJ 1000 kJ 2000 kJ 5000 kJ 10000 kJ

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