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Energy Converter
Convert energy units including joules, kilojoules, calories, kilocalories, kilowatt-hours, BTU, and electronvolts. Use it for physics, nutrition labels, electricity usage, heating, and engineering calculations.
2. Choose units
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3. Copy the result
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1 Joule (J) = 0.2390057361 Calorie (cal)
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When to use a energy converter
Energy Converter helps with everyday measurement changes, product specs, school work, travel, reports, and technical notes where different energy units need to match.
Popular energy searches
- joules to calories
- kwh to joules
- calories to joules
- btu to kwh
- kilojoules to calories
Energy Converter FAQ
How many joules are in one calorie?
One small calorie equals 4.184 joules.
How many joules are in one kilowatt-hour?
One kilowatt-hour equals 3,600,000 joules.
What is the difference between calorie and kcal?
One kilocalorie, often written as kcal, equals 1000 small calories.