Joule to Calorie Converter
1 J ≈ 0.239 cal (small) ≈ 0.000239 kcal (food calorie).
Result
kcal
0.2390
1,000 J / 4184 = 0.2390.
- Joules1,000
- kJ1.0000
- Small cal239.01
- kcal0.2390
Step-by-step
- kcal = 1000 / 4184 = 0.2390.
How to use this calculator
- Enter joules.
- Pick output (small cal or food kcal).
- Read converted value.
About this calculator
Inverse of calorie-to-joule. 1 kJ ≈ 239 small cal ≈ 0.239 kcal. Some example energies: a baseball thrown at 90 mph has ~135 J kinetic energy, equivalent to about 32 calories (small) or 0.032 food Calories.
Frequently asked
Mostly resolved by context — nutrition uses kcal/Cal, physics uses J or cal. Watch for "calories" (lowercase) on energy bars — usually kcal in disguise.
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