Convert calories to joules
1 cal = 4.184 J
1 J = 0.239006 cal
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How to convert calories to joules
Multiply the value in calories by 4.184 to get joules. As a formula: J = cal × 4.184
Good to know
A thermochemical calorie is exactly 4.184 J, so 672 cal is 2,811.6 J. The International Table calorie used in engineering tables is 4.1868 J, 0.07% more — enough to change the fourth significant figure.
calories to joules conversion table
| calories (cal) | joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 10 cal | 41.84 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 231 cal | 966.504 J |
| 500 cal | 2,092 J |
| 672 cal | 2,811.65 J |
| 1,000 cal | 4,184 J |
| 5,000 cal | 20,920 J |
| 10,000 cal | 41,840 J |
Related conversions
Need other units? The full Energy Unit Converter converts between every unit it supports, and the Unit Converters page lists the rest.
calories to joules — questions
How many joules are in 1 cal?
1 cal = 4.184 J. Multiply the value in calories by 4.184 to get joules.
How do I convert calories to joules?
Multiply the value in calories by 4.184. For example, 100 cal × 4.184 = 418.4 J.
What is 100 cal in joules?
100 cal = 418.4 J.
What is 672 cal in joules?
672 cal = 2,811.65 J.
What is 1,000 cal in joules?
1,000 cal = 4,184 J.