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Energy Converter

Convert between joules, calories, BTU, watt-hours and more.

Joule (J)3600000
Kilojoule (kJ)3600
Calorie (cal)860421
Kilocalorie (kcal)860.421
Watt-hour (Wh)1000
Electronvolt (eV)2.247e+25
BTU3412.13
Foot-pound (ft·lb)2655220
Erg3.600e+13

About Energy Converter

Energy Converter converts between joules, kilojoules, calories, kilocalories, BTU, watt-hours, kilowatt-hours, and electron volts. It's indispensable for physics, nutrition, and electrical engineering work. All energy unit conversions are calculated simultaneously.

  • Joules, calories, BTU, kWh, eV
  • Nutritional and physical energy units
  • All results shown at once
  • Scientific precision

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