Mathematical System Verified
Energy Converter
Convert Joules, Calories, kWh, and BTUs.
Last mathematically verified: Jan 2026
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
Related Tools
Popular Financial Tools
Mortgage CalculatorMonthly payments and PMI calculations.Investment CalculatorProjects long-term wealth growth.Income Tax CalculatorFederal and state tax estimations.Loan AmortizationDetailed payoff schedules.BMI CalculatorBody Mass Index assessment.Calorie CalculatorDaily metabolic needs based on activity.Body Fat %Body composition using the Navy Method.Due Date CalculatorPregnancy tracking utility.GPA & Grade CalculatorScore tracking for students.Scientific CalculatorAdvanced mathematical operations.
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.