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Power and Energy

kJtokcal

Convert kilojoules (kJ) to kilocalories (kcal).

Factor1 kJ = 0.2390057 kcal

Converter

kJ

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1000kcal

Rendered to 6 significant figures.

Formula

Formula
kcal = kJ × 0.2390057

Multiply any value in kilojoules by 0.2390057 to obtain the value in kilocalories.

Worked example

Convert 4184 kJ to kcal.

  1. 01Start with 4184 kJ.
  2. 02Multiply by the conversion factor: 4184 × 0.2390057 = 1000 kcal.
Result4184 kJ = 1000 kcal

Conversion table

kJkcal
10.23901
20.47801
51.195
102.3901
204.7801
5011.95
10023.901
20047.801
500119.5
1000239.01

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kJ to kcal?
1 kJ equals 0.2390057 kcal. To convert, multiply the value in kilojoules by 0.2390057.
How do I convert 1 kJ to kcal?
1 kJ = 0.239006 kcal. For any value, multiply by 0.2390057.
How do I convert kcal back to kJ?
Divide by the same factor — or equivalently, multiply by 4.184. So 1 kcal = 4.184 kJ.
When would I need to convert kilojoule to kilocalorie?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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