Energy Converter
Convert between energy and power units
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How to Use Energy Converter
- 1Enter an energy value in the input field.
- 2Select the input unit from the dropdown.
- 3See all energy conversions update instantly.
About Energy Converter
Convert between energy units: joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU, electron-volts, and foot-pounds.
Frequently Asked Questions
How do I convert calories to joules?
Multiply calories by 4.184 to get joules. One food Calorie (kcal) = 4,184 joules = 4.184 kJ.
What is a kilowatt-hour?
A kilowatt-hour (kWh) is the energy consumed by a 1,000-watt appliance running for one hour. It equals 3,600,000 joules and is the standard unit for electricity billing.