Energy Converter

Popular Energy Conversions

• joules to calories
• calories to joules
• kwh to joules
• btu to joules
• foot-pound to joule
• kilocalorie to joule

Complete List of Energy Units

All available energy units for conversion:

• joule [J]
• 1 kilojoule [kJ] = 1000 joule [J]
  kilojoule to joule, joule to kilojoule
• 1 calorie [cal] = 4.184 joule [J]
  calorie to joule, joule to calorie
• 1 kilocalorie [kcal] = 4184 joule [J]
  kilocalorie to joule, joule to kilocalorie
• 1 watt-hour [Wh] = 3600 joule [J]
  watt-hour to joule, joule to watt-hour
• 1 kilowatt-hour [kWh] = 3600000 joule [J]
  kilowatt-hour to joule, joule to kilowatt-hour
• 1 British thermal unit [BTU] = 1055.0559 joule [J]
  british thermal unit to joule, joule to british thermal unit
• 1 foot-pound [ft⋅lbf] = 1.3558179 joule [J]
  foot-pound to joule, joule to foot-pound
• 1 joule [J] = 6.2415091e+18 electron volt [eV]
  electron volt to joule, joule to electron volt
• 1 megajoule [MJ] = 1000000 joule [J]
  megajoule to joule, joule to megajoule
• 1 gigajoule [GJ] = 1000000000 joule [J]
  gigajoule to joule, joule to gigajoule
• 1 terajoule [TJ] = 1e+12 joule [J]
  terajoule to joule, joule to terajoule
• 1 therm [thm] = 105505600 joule [J]
  therm to joule, joule to therm
• 1 quad [quad] = 1.0550559e+18 joule [J]
  quad to joule, joule to quad
• 1 tonne of TNT [t TNT] = 4184000000 joule [J]
  tonne of tnt to joule, joule to tonne of tnt
• 1 joule [J] = 6.2415091e+15 kiloelectron volt [keV]
  kiloelectron volt to joule, joule to kiloelectron volt
• 1 joule [J] = 6.2415091e+12 megaelectron volt [MeV]
  megaelectron volt to joule, joule to megaelectron volt
• 1 joule [J] = 6241509074 gigaelectron volt [GeV]
  gigaelectron volt to joule, joule to gigaelectron volt
• 1 joule [J] = 6241509.1 teraelectron volt [TeV]
  teraelectron volt to joule, joule to teraelectron volt
• 1 joule [J] = 10000000 erg [erg]
  erg to joule, joule to erg
• 1 joule [J] = 2.2937123e+17 hartree [Eh]
  hartree to joule, joule to hartree
• 1 joule [J] = 4.5874246e+17 rydberg [Ry]
  rydberg to joule, joule to rydberg

Energy and Work Conversions

Energy conversion spans multiple fields from nutrition to engineering. Our converter handles mechanical, thermal, electrical, and chemical energy units.

Energy Forms

Joule (J) is the SI unit for all energy forms. Calories measure thermal energy, BTU for heating/cooling, kWh for electrical energy consumption.

Nutritional vs. Scientific

Food calories are actually kilocalories (kcal). 1 food calorie = 1000 scientific calories = 4184 joules.

Power vs. Energy

Energy is total work done (joules), power is energy per time (watts). 1 kWh = 3.6 million joules of energy consumed over time.

Renewable Energy

Solar, wind, and battery systems measure energy in kWh or MWh. Energy density matters for storage and transportation applications.

Common Applications

Nutrition and diet planning, heating and cooling systems, electrical billing, mechanical engineering, renewable energy systems, and battery technology.

Conversion Tips

1 kWh ≈ 3600 kJ. Food: 1 calorie = 4.184 J. For heating: 1 BTU ≈ 1055 J. Walking 1 mile burns ~100 food calories.