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About the Energy Converter
The Energy Converter on truecalculator.net converts one energy measurement into another unit. Enter a value and it returns the equivalent amount in joules, calories, kilowatt-hours, BTU, electronvolts, and other supported units. The output shows a precise result for the units you select.
Energy conversion uses fixed factors defined by the SI system, such as 1 calorie = 4.184 joules and 1 kilowatt-hour = 3,600,000 joules. The calculator applies these factors to your input value. You only need a number, the source unit, and the target unit. Watch the difference between calories and kilocalories, since food labels use kilocalories.
- Type your energy value into the input box.
- Select the unit you are converting from in the first dropdown.
- Pick the target unit and read the converted result below.