Direct conversion
Convert kilojoule [kJ] to kilocalorie [kcal] instantly with formula, examples, chart, and FAQs.
1 kilojoule [kJ] = 0.239006 kilocalorie [kcal]
1 kilojoule [kJ] = 0.239006 kilocalorie [kcal]
Example: 1 kilojoule [kJ] equals 0.239006 kilocalorie [kcal].
Energy conversions use joule as the reference unit, including electrical, thermal, nutrition, and mechanical energy units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The kilojoule is an energy unit equal to 1000 joules.
HistoryKilojoules are a metric multiple of joules and became common where joules are too small.
Current useKilojoules are used for food energy labels, thermodynamics, exercise energy, and engineering calculations.
The kilocalorie (kcal) is a energy unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse kilocalorie when comparing energy values, checking specifications, converting between systems, or preparing quick estimates.
| kilojoule [kJ] | kilocalorie [kcal] |
|---|---|
| 1 | 0.239006 |
| 2 | 0.478011 |
| 5 | 1.195029 |
| 10 | 2.390057 |
| 20 | 4.780115 |
| 25 | 5.975143 |
| 50 | 11.950287 |
| 100 | 23.900574 |
| 1000 | 239.005736 |
Use this formula: 1 kilojoule [kJ] = 0.239006 kilocalorie [kcal] Enter your value in the calculator and the result updates instantly.
1 kilojoule [kJ] equals 0.239006 kilocalorie [kcal].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.