Energy Converter

Convert between different energy units including joules, calories, and kilowatt hours (kWh). Perfect for physics calculations, nutrition analysis, and energy consumption studies.

About Energy Units

Energy can be measured in various units depending on the context. This converter helps you convert between common energy units used in physics, nutrition, and power consumption calculations.

Conversion Factors

Base Unit: Joule (J)

  • 1 calorie = 4.184 joules
  • 1 kilocalorie = 4,184 joules
  • 1 kilowatt hour = 3,600,000 joules

Common Uses

Physics and Engineering

  • Work calculations
  • Heat energy
  • Kinetic energy
  • Potential energy

Nutrition

  • Food energy content
  • Metabolic calculations
  • Dietary planning
  • Exercise science

Power and Electricity

  • Energy consumption
  • Power generation
  • Battery capacity
  • Efficiency calculations

Industrial Applications

  • Process energy
  • Heat transfer
  • Chemical reactions
  • System efficiency

Understanding Units

Joule (J)

  • SI unit of energy
  • Work done by 1 newton over 1 meter
  • Used in physics and engineering

Calorie (cal)

  • Heat energy unit
  • Energy to raise 1g water by 1°C
  • Used in older scientific work

Kilocalorie (kcal)

  • Food energy unit
  • 1000 calories
  • Used in nutrition labels

Kilowatt Hour (kWh)

  • Electrical energy unit
  • Used in power consumption
  • Common in utility billing

Tips for Conversion

  1. Check unit prefixes carefully
  2. Consider significant figures
  3. Verify energy magnitudes
  4. Use scientific notation for large values
  5. Remember context-specific conventions