Calorie to Joule Converter
1 cal (thermochemical) = 4.184 J. 1 kcal (food calorie) = 4,184 J.
Result
Joules
418,400.00
418.4000 kJ.
- Conversion factor4184 J/kcal
- Joules418,400.00
- kJ418.4000
- Wh116.222
Step-by-step
- 100 kcal × 4184 = 418,400.00 J.
How to use this calculator
- Enter calories.
- Pick small or food (kcal).
- Read joules / kJ.
About this calculator
Note the capital-C confusion: "calorie" usually means SMALL calorie (4.184 J), but "Calorie" with a capital C and "food calorie" mean kilocalorie (4,184 J). A 200-Calorie cookie is 200 kcal = 836 kJ, the same energy as a 200 W appliance running for ~1 hour.
Frequently asked
In nutrition, "Calorie" (capital C) = kilocalorie. In physics, "calorie" (lowercase) = small calorie. Be explicit when conversions are involved.
Related calculators
Joule to Calorie Converter
1 J ≈ 0.239 cal (small) ≈ 0.000239 kcal (food calorie).
BTU to kWh Converter
Convert British thermal units to kilowatt-hours. 1 BTU ≈ 0.000293 kWh.
Horsepower to Watts Converter
Convert mechanical (imperial) horsepower to watts. 1 hp = 745.7 W.
kWh to BTU Converter
Convert kilowatt-hours to BTU. 1 kWh = 3,412 BTU.
Joule ↔ Electron-Volt Converter
For atomic and particle-physics scales: 1 eV = 1.602176634 × 10⁻¹⁹ J.
Force Calculator (F = m·a)
Newton's second law: enter mass and acceleration, get force in newtons. Step-by-step working and pound-force conversion shown.