Energy Converter
Convert between Joule, Kilojoule, Calorie, Kilocalorie, Watt-hour, Kilowatt-hour, BTU, Electronvolt, and Foot-pound instantly.
How do I convert Joules to Calories?
1 Calorie (cal) = 4.184 Joules. To convert Joules to Calories, divide the Joule value by 4.184.
How do I convert kWh to BTU?
1 kWh = 3412.14 BTU. Multiply the kWh value by 3412.14 to get BTU.
What is the difference between Calorie and Kilocalorie?
1 Kilocalorie (kcal) = 1000 Calories (cal). In food labeling, "Calorie" (capital C) typically means Kilocalorie.
What is an Electronvolt?
An Electronvolt (eV) is the energy gained by an electron moving across 1 volt. 1 eV = 1.602×10⁻¹⁹ J. It is used in particle physics.
What is a Watt-hour?
A Watt-hour (Wh) is a unit of energy equal to one watt of power expended for one hour. It is commonly used to measure electrical energy consumption.
How do I convert between different energy units?
Use the conversion factors: 1 J = 0.239 cal, 1 kWh = 3.6×10⁶ J, 1 BTU = 1055 J, 1 eV = 1.602×10⁻¹⁹ J. Enter the value and select the units to convert.
What is the SI unit of energy?
The SI unit of energy is the Joule (J). It is named after James Prescott Joule and is defined as the work done by a force of one newton acting through one meter.
Can I convert between mechanical and electrical energy?
Yes, energy can be converted between different forms. 1 kWh (electrical) = 3.6×10⁶ J (mechanical). The conversion is based on the principle of conservation of energy.