Kilojoule (kJ)
The kilojoule equals 1000 joules and is convenient for food energy, heat, and engineering calculations.
History: the kilojoule became a convenient multiple of the joule for food, heat, and engineering calculations.
Quickly convert kilojoules to kilocalories without lookup tables or manual math.
This page is focused on converting kilojoules to kilocalories. Type a number into the first field and the result appears immediately in the second field.
Example: 1 kJ = 0.2390057361 kcal. Conversion formula: result = value × 1000 / 4184.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The kilojoule equals 1000 joules and is convenient for food energy, heat, and engineering calculations.
History: the kilojoule became a convenient multiple of the joule for food, heat, and engineering calculations.
The kilocalorie equals 1000 calories and is the familiar “Calorie” on food labels.
History: the kilocalorie appeared as a larger heat unit and became the familiar food Calorie.
Enter a value in the Kilojoule field. The converter applies the formula "result = value × 1000 / 4184" and immediately shows the result in kilocalories.
1 kJ = 0.2390057361 kcal.
Yes. Use the swap button or choose the reverse pair from the full conversion list.