Calorie to Kilojoule Converter

Type in either field — conversion updates instantly in both directions.

Formula: kJ = cal × 0.004184
Quick conversion table
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How to convert Calorie to Kilojoule

Calories and Kilojoules are energy units used in physics, nutrition, and electrical engineering. One cal equals 0.004184 kJ. Use this converter for electricity bills, dietary calorie counts, and scientific calculations.

Formula: kJ = cal × 0.004184
Reverse: cal = kJ × 239.005736