Energy Converter
Convert between different energy units including joules, calories, BTU, and more
Energy Converter
Common Conversions
Energy Examples
Household Energy
- • Average home daily use: ~30 kWh
- • LED bulb (10W, 1 hour): 36 kJ
- • Microwave (1000W, 2 min): 120 kJ
- • Electric car (100 miles): ~30 kWh
Food Energy
- • Apple: ~350 kJ (80 kcal)
- • Slice of bread: ~315 kJ (75 kcal)
- • Can of soda: ~590 kJ (140 kcal)
- • Daily intake: ~8400 kJ (2000 kcal)
Energy Unit Reference
Scientific Units
- • Joule (J): SI base unit of energy
- • Calorie (cal): Energy to heat 1g water by 1°C
- • Electron Volt (eV): Atomic scale energy
- • Erg: CGS unit (very small)
Practical Units
- • kWh: Electrical energy billing
- • BTU: Heating/cooling systems
- • Therm: Natural gas billing
- • kcal: Food energy (Calories)