Kilojoules to Joules

Kilojoule to Joule Calculator

Convert energy from Kilojoules (kJ) to Joules (J)

How to Convert Kilojoules to Joules

A kilojoule is a larger unit of energy, where “kilo-” means one thousand (103) times a joule, the standard SI unit of energy. To convert from kilojoules to joules, you simply multiply by 1,000.

Formula

J = kJ ร— 1,000
J = Energy in joules
kJ = Energy in kilojoules

Quick Trick: 1 Kilojoule = 1,000 Joules!

Let’s Solve One Together

Imagine you have an energy measurement:

  • We measured: 3 kilojoules

Here’s how we figure it out:

1. Take our formula: J = kJ ร— 1,000

2. Put in 3 kilojoules

3. J = 3 ร— 1,000

Answer: 3,000 J

Definitions of Key Terms

Joule (J)

Joules are a standard unit of energy. They are used to measure energy, work, or heat. One joule is the energy needed to move a force of one newton over one meter.

Kilojoule (kJ)

A kilojoule (kJ) is a unit of energy equal to one thousand joules. It is commonly used in food energy and nutrition, useful for measuring energy in larger quantities.

Kilojoules to Joules Conversion Table (kJ to J)

Kilojoule [kJ] Joule [J]
1 kJ 1000 J
10 kJ 10000 J
100 kJ 100000 J
500 kJ 500000 J
1000 kJ 1000000 J
5000 kJ 5000000 J
10000 kJ 10000000 J
50000 kJ 50000000 J
100000 kJ 100000000 J

Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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