ðĨ Energy Converter
Convert between calories (kcal) and kilojoules (kJ)
Formula: 1 kcal = 4.184 kJ
How it works
Convert between calories (kcal) and kilojoules (kJ) with this free bidirectional energy converter. The standard factor: 1 kilocalorie equals 4.184 kilojoules. Type in either field for instant results. Essential for reading nutrition labels in countries that use kJ, meal planning, and understanding energy intake across different measurement systems.