Convert Kilojoules to Kilocalories

Whether you need to express a value in kcal instead of kJ, this guide walks you through the exact steps. Energy conversions connect food nutrition labels (calories), electricity bills (kWh), and scientific measurements in joules or BTU.

To convert, multiply the kilojoules value by 0.239006. Written as an equation: kcal = kJ × 0.239006.

One kilojoules equals approximately 0.239006 kcal. This means you can multiply any kJ value by 0.239006 to get the equivalent in kcal.

Worked example: 100 kJ = 23.900574 kcal. Enter your own value in the converter above for instant results.

Common mistake: Food calories on nutrition labels are actually kilocalories (kcal), which confuses many people when comparing to joules or watt-hours.

Bookmark this page for quick kJ to kcal conversions, or use the swap button to reverse the direction and convert kcal back to kJ.