Energy converter
This energy converter tool helps you convert between 73 different units:
Common energy units explained
Learn more about these commonly used energy units:
All possible energy conversions
Below, we provide an overview of all the energy conversions available on this website to help you navigate and utilize our resources efficiently.
What is Energy?
Energy is the capacity to do work or produce heat. Energy exists in different forms, such as kinetic, potential, thermal, chemical, and electrical energy.
Common Units of Energy
Energy is measured using different units based on the measurement system. The most commonly used units include:
- Joule (J) - The SI unit of energy.
- Calorie (cal) - Commonly used in nutrition.
- Electronvolt (eV) - Used in atomic and particle physics.
- Watt-hour (Wh) - Used in electrical energy measurement.
- British Thermal Unit (BTU) - Used in heating and cooling applications.
FAQs about Energy
How is energy measured in electricity?
In electricity, energy is typically measured in watt-hours (Wh) or kilowatt-hours (kWh). One kilowatt-hour is equivalent to 3.6 million joules and represents the energy consumed when a 1,000-watt appliance runs for one hour.
What is the difference between kinetic and potential energy?
Kinetic energy is the energy of motion, such as a moving car or flowing water. Potential energy, on the other hand, is stored energy based on an object's position or state, like a stretched rubber band or a raised weight.
Can energy be created or destroyed?
According to the law of conservation of energy, energy cannot be created or destroyed; it can only be transformed from one form to another. For example, chemical energy in food is converted into kinetic energy when we move.
What is dark energy, and why is it important?
Dark energy is a mysterious form of energy that is believed to make up about 68% of the universe. Scientists theorize that it is responsible for the accelerated expansion of the universe, but its exact nature remains unknown.
How much energy does the human body use in a day?
The average adult requires about 2,000 to 2,500 kilocalories (kcal) of energy per day, which is equivalent to approximately 8.4 to 10.5 million joules. This energy is used for essential bodily functions such as breathing, digestion, and movement.