Energy Converter
Convert between different units of energy measurement
From
Joule (J)
Kilojoule (kJ)
Calorie (cal)
Kilocalorie (kcal)
Watt-hour (Wh)
Kilowatt-hour (kWh)
Electronvolt (eV)
British Thermal Unit (BTU)
To
Joule (J)
Kilojoule (kJ)
Calorie (cal)
Kilocalorie (kcal)
Watt-hour (Wh)
Kilowatt-hour (kWh)
Electronvolt (eV)
British Thermal Unit (BTU)
Convert
Swap Units
Common Energy Conversions
1 joule = 0.239 calories
1 calorie = 4.184 joules
1 kilowatt-hour = 3,600,000 joules
1 BTU = 1,055.06 joules
1 electronvolt = 1.602176634e-19 joules
1 watt-hour = 3,600 joules
1 kilocalorie = 4,184 joules
1 kilojoule = 1,000 joules
Usage Tips
Enter any numeric value in the "From" field
Select your input unit from the dropdown menu
Choose your desired output unit
Click "Convert" to see the result
Use "Swap Units" to quickly reverse the conversion