About the Energy Converter
Convert food energy between Calories and kilojoules, electricity in kWh, heating in BTU and therms, and physics units like joules and electronvolts.
Energy Converter formula
1 kcal (food Calorie) = 4.184 kJ
1 kWh = 3.6 MJEnergy Converter
Convert joules, calories, kilojoules, kWh and BTU.
- Type a value
- Choose the units
- The answer updates instantly
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Is a food Calorie the same as a calorie?
No — a food Calorie (capital C) is a kilocalorie, 1,000 small calories. Nutrition labels in kJ divide by 4.184 to get Calories.
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