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
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 × 1,000
2. Put in 3 kilojoules
3. J = 3 × 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 |
