Use this Joules ↔ kilocalories (kcal) converter to quickly convert energy values between the SI unit (J) and food energy (kcal). This is useful for nutrition labels, sports tracking, physics exercises, and general energy calculations.
The conversion uses the standard factor: 1 kcal = 4,184 J. All calculations run locally in your browser for speed and privacy (no data is sent).
Conversion factor: 1 kcal = 4,184 joules.