Free instant kJ → J converter. No signup, no uploads — everything is calculated privately in your browser.
1 kJ = 1,000 joules
1 kilojoules = 1,000 joules
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 kilojoule equals 1,000 joules. To convert kilojoules to joules, multiply the value by 1000.
1 kilojoule = 1,000 joules. Formula: value × 1000
Example: 1 kJ → 1,000 J. Type any value in the converter above to see it converted live.
| Kilojoules (kJ) | Joules (J) |
|---|---|
| 1 kJ | 1,000 J |
| 2 kJ | 2,000 J |
| 5 kJ | 5,000 J |
| 10 kJ | 10,000 J |
| 25 kJ | 25,000 J |
| 50 kJ | 50,000 J |
| 100 kJ | 100,000 J |
| 250 kJ | 250,000 J |
| 500 kJ | 500,000 J |
| 1,000 kJ | 1,000,000 J |
1 kilojoule = 1,000 joules. Formula: value × 1000. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 kilojoule = 1000 joules. The reverse factor is 1 joule = 0.001 kilojoules.
1 kJ = 1,000 J; 10 kJ = 10,000 J; 100 kJ = 100,000 J. Use the full conversion table below for more reference values.
No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".