Calories to kJ Converter
Convert thermochemical Calories (cal) to Kilojoules (kJ) instantly.
Enter Value
Conversion Result
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Formula & Conversion Step:
What is the Calories to Kilojoules Converter?
The Calories to Kilojoules (kJ) converter is an international diet and physics tool. Depending on whether you use "Small Calories" or "Large Food Calories," it translates the energy into the standard metric Kilojoule format used globally.
How It Works (Formula)
If converting US Food Calories (kcal), the calculator multiplies the inputted value by 4.184 to find the Kilojoule (kJ) value. If converting Small chemistry calories, the calculator divides the value by 1,000, then multiplies by 4.184.
$$ E_{(\text{kJ})} = E_{(\text{kcal})} \times 4.184 $$
The thermodynamic multiplication mapping US nutrition to metric physics.
How to Use It
Enter the energy value in Calories. Use the dropdown menu to specify if you mean "Large Food Calories" or "Small Chemistry Calories". The tool applies the correct multiplier/divisor and outputs the exact equivalent in metric Kilojoules (kJ).