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Energy Converter
Conversion Result
1 kcal = 4,184 J
In Joules (SI Unit)
4,184 J
Quick Conversions
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How to Use the Energy Converter
- Enter the energy value
- Select the source unit
- Select the target unit
- See the converted result
Common Uses
- Nutrition - Convert food calories (kcal) to joules
- Electricity - Convert kWh for billing
- Heating - BTU calculations for HVAC
- Physics - Scientific energy calculations
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Frequently Asked Questions
What's the difference between joules and calories?
One calorie equals 4.184 joules. Food calories (kcal) are actually kilocalories, equal to 4,184 joules.
How do I convert kWh to joules?
Multiply kWh by 3,600,000 to get joules. One kilowatt-hour equals 3.6 megajoules.
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.
How much is 1 eV?
One electron volt (eV) is a very small unit, equal to 1.602 × 10⁻¹⁹ joules. It's used in atomic and particle physics.