Free instant cal → J converter. No signup, no uploads — everything is calculated privately in your browser.
1 cal = 4.184 joules
1 calories = 4.184 joules
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 calorie equals 4.184 joules. To convert calories to joules, multiply the value by 4.184.
1 calorie = 4.184 joules. Formula: value × 4.184
Example: 1 cal → 4.184 J. Type any value in the converter above to see it converted live.
| Calories (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 5 cal | 20.92 J |
| 10 cal | 41.84 J |
| 25 cal | 104.6 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 250 cal | 1,046 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
1 calorie = 4.184 joules. Formula: value × 4.184. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 calorie = 4.184 joules. The reverse factor is 1 joule = 0.2390057361376673 calories.
1 cal = 4.184 J; 10 cal = 41.84 J; 100 cal = 418.4 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".