How to use this energy converter
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
Convert kWh to joules or food kilocalories to kilojoules.
What this calculator is useful for
Convert energy between joules, kilojoules, calories, kilocalories, watt-hours and kilowatt-hours. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Energy Converter calculate?
Convert energy between joules, kilojoules, calories, kilocalories, watt-hours and kilowatt-hours.
How does the calculation work?
Values are converted through joules as a common base unit.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.