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Energy Converter
Result
1 J = 0.239006 cal
Conversion Factor
1 J = 0.239006 cal
Quick Conversions
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How to Use the Energy Converter
- Enter the energy value you want to convert
- Select the source unit (joules, calories, kWh, etc.)
- Select the target unit
- The result appears instantly
Common Energy Conversions
- Nutrition: Convert between calories and joules for food energy
- Electricity: Convert kilowatt-hours for energy bills
- HVAC: Convert BTU for heating/cooling capacity
- Physics: Convert energy units for scientific calculations
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Frequently Asked Questions
How do I convert joules to calories?
Divide joules by 4.184 to get calories. For example, 100 J = 23.9 cal.
What's the difference between calories and Calories?
A food Calorie (kcal) equals 1000 small calories. When nutrition labels say 'Calories,' they mean kilocalories.
How many joules in a kilowatt-hour?
One kilowatt-hour equals 3,600,000 joules (3.6 MJ).
What is a BTU?
A British Thermal Unit (BTU) is the energy needed to heat one pound of water by 1°F. It equals about 1,055 joules.