Verified Tool
Energy Converter
Convert Joules, Calories, kWh, and BTUs.
Energy comes in many forms: mechanical (Joules), thermal (Calories), and electrical (kWh). Understanding these conversions helps you relate the energy in your food (kcal) to the energy used by your home (kWh).
Energy Conversion
Convert energy conversion instantly.
Energy Context
- 1 Food Calorie (kcal) = 4,184 Joules
- 1 kWh = 3.6 Million Joules
- A 2000 kcal diet ≈ 8.4 M Joules
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Frequently Asked Questions
Common questions about this calculator
What is a Calorie?
Scientifically, 1 calorie is the energy needed to heat 1 gram of water by 1°C. The "Calories" on food labels are actually Kilocalories (kcal), which is 1000 of these scientific calories.