Kilojoules to Kilocalories Converter 2026 - Energy Conversion Calculator

Kilojoules to Kilocalories Converter

Convert kJ to kcal for nutrition and energy calculations

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kcal

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About Kilojoules to Kilocalories Conversion

Kilojoules (kJ) and kilocalories (kcal) are both units of energy commonly used in nutrition labeling and scientific calculations. Understanding their conversion is essential for dietary planning and energy analysis.

Conversion Formula

1 kilocalorie = 4.184 kilojoules
Kilocalories = Kilojoules รท 4.184

Common Conversions

  • 100 kJ = 23.9 kcal
  • 500 kJ = 119.5 kcal
  • 1000 kJ = 239.0 kcal
  • 2000 kJ = 478.0 kcal

Applications

  • Nutrition labeling and dietary planning
  • Food energy content analysis
  • Metabolic rate calculations
  • Exercise energy expenditure
  • Scientific energy measurements

Important Notes

  • Food labels may use both kJ and kcal
  • 1 kcal is sometimes called a "Calorie" (with capital C)
  • Different countries prefer different units
  • Both measure the same type of energy