kilojoules to kilocalories — kJ to kcal Converter

Conversion Formula

Multiply the kilojoules value by the conversion factor:
kcal = kJ × 0.239

How to Convert Step by Step

• Enter the number of kilojoules you want to convert (e.g. 10 kJ).
• Multiply it by the factor 0.239.
• Round the result to 2–4 decimals for practical use — done, that is your value in kilocalories.

Common kilojoules to kcal Conversion Table

Real-World Examples

• Kilojoules are used for food energy and exercise. Example: 10 kJ ≈ 2.3901 kcal.
• Kilocalories are used for food labels, weight loss, and workouts. Example: 20 kcal ≈ 83.68 kJ.
• Kilojoules are used for food energy and exercise. Another common case: 50 kJ = 11.9503 kcal.

About kilojoules & kilocalories

• kilojoules: A kilojoule is 1,000 J, used on AU/NZ food labels. 1 large Calorie = 4.184 kJ.
• kilocalories: The kilocalorie ("Calorie") measures food and exercise energy: 4.184 kJ each. Adults need ~2,000 kcal daily.

FAQ

How many kilocalories in 1 kJ?

1 kJ = 0.239 kcal. Use the converter above to compute any value, or multiply kJ by 0.239.

Is this kilojoules-to-kilocalories converter accurate?

Yes — conversions use the standard international factors and are rounded to 4 decimals.

When is kilojoules to kilocalories conversion used?

Kilojoules are used for food energy and exercise. Kilocalories are used for food labels, weight loss, and workouts. Whenever a value is given in kJ but you need kcal, this converter is the quick fix.

Related Conversions

joules→kilojouleskilojoules→jouleskilojoules→megajoulesmegajoules→kilojouleswatt-hours→kilowatt-hourskilowatt-hours→watt-hourskilowatt-hours→megajoulesmegajoules→kilowatt-hourskilocalories→kilojoules