Calories to Joules Converter
Convert thermochemical Calories (cal) to Joules (J) instantly.
Enter Value
Conversion Result
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Formula & Conversion Step:
What is the Calories to Joules Converter?
The Calories to Joules (J) converter translates biological food energy into the pure physical energy unit of the universe (the Joule). It is frequently used in chemistry labs and nutritional science to establish exact caloric densities.
How It Works (Formula)
There are two types of calories. A "Small Calorie" (cal), used in physics, equals exactly 4.184 Joules. A "Large Calorie" (kcal/Food Calorie), used on nutrition labels, equals 4,184 Joules. The calculator multiplies your inputted calories by the correct thermodynamic constant.
$$ E_{(\text{J})} = E_{(\text{cal})} \times 4.184 $$
The chemical multiplier used to derive Joules from thermochemical small calories.
How to Use It
Enter the energy value in Calories. Use the dropdown to specify if you are converting Small Calories (physics/chemistry) or Large Food Calories (nutrition). The tool will apply the correct multiplier and output the exact physical energy in Joules (J).