Convert Small Calories (cal) to Joules
Small Calories (cal) to Joules conversion table
| Small Calories (cal) (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 |
| 200 cal | 836.8 J |
| 500 cal | 2092 J |
| 1000 cal | 4184 J |
How to convert small calories (cal) to joules
Calories and joules both measure energy. The thermochemical calorie (cal) equals 4.184 joules. Food 'Calories' (capital C) are actually kilocalories (1,000 small calories). This converter uses the small calorie used in chemistry and physics.
Multiply calories by 4.184 to get joules. Formula: J = cal × 4.184. 1 cal = 4.184 J. 100 cal = 418.4 J. Heating 1 gram of water by 1°C requires about 4.184 J (1 cal).
Chemistry lab calculations, physics problems, and scientific energy measurements use the calorie-joule relationship. Nutrition labels use kcal (food Calorie).
Remember: 1 food Calorie (kcal) = 1,000 cal = 4,184 J = 4.184 kJ.
Related conversions
Frequently asked questions
1 thermochemical calorie = 4.184 joules.
No. A food Calorie (capital C) = 1 kilocalorie = 1,000 small calories = 4,184 joules.
Divide joules by 4.184. Example: 418.4 J ÷ 4.184 = 100 cal.