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Calories (kcal) to Kilojoules (kJ)

Convert food calories to kJ for nutrition labels. Australian and EU labels show kJ.

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Formula: kcal × 4.184 = kJ
How to use this converter
  1. 1Enter food calories.
  2. 2kJ appears instantly.
Common questions
2000 kcal = 8368 kJ — standard daily reference intake.
The EU mandates both kcal and kJ. Australia uses kJ as primary energy unit.
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Kilojoules to CaloriesBTU to KilojoulesKilojoules to BTU