Kilojoules to Kilocalories Converter
Convert kilojoules to kilocalories instantly. Exact factor: 1 kJ = 0.23901 kcal.
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Convert kilojoules to kilocalories
The exact conversion factor is 1 kJ = 0.23901 kcal. Type any value and the result updates instantly; the math is shown beneath the board.
Worked by hand
Multiply the kilojoules value by 4.184 (that is, 1 ÷ 0.23901) to get kilocalories.
Worked example
- Take 1 kJ
- multiply by 4.184
- the result is 0.23901 kcal
How to use it
- Enter your kilojoules
- Read the kilocalories result
- Check the factor line to verify by hand
Frequently asked questions
How many kilocalories are in one kilojoules?
Exactly 0.23901 kcal, by the SI/NIST definition.
How do I convert kilocalories back to kilojoules?
Divide by 0.23901 — or use the full converter where both directions are one click.
Is this rounding or exact?
The factor is exact; only the displayed decimals are rounded.