Kilocalorie (kcal)
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.
Quickly convert kilocalories to joules without lookup tables or manual math.
This page is focused on converting kilocalories to joules. Type a number into the first field and the result appears immediately in the second field.
Example: 1 kcal = 4184 J. Conversion formula: result = value × 4184 / 1.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
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.
The joule is the SI unit of energy and connects mechanical work, heat, and electrical energy.
History: the joule is named after James Prescott Joule and is the SI unit of energy.
Enter a value in the Kilocalorie field. The converter applies the formula "result = value × 4184 / 1" and immediately shows the result in joules.
1 kcal = 4184 J.
Yes. Use the swap button or choose the reverse pair from the full conversion list.