Convert joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU and therms instantly — for energy consumption, electrical energy, food energy, heating and industrial equipment in cross-border trade.
Enter a value, pick the source and target units, and the result updates in real time. Click Swap to reverse the conversion.
| From | To | Result |
|---|---|---|
| 1 kWh | kJ | 3600 kJ |
| 1 kJ | J | 1000 J |
| 1 kcal | kJ | 4.184 kJ |
| 1 kWh | kcal | 860.421 kcal |
| 1 BTU | J | 1055.06 J |
| 1 therm | kWh | 29.3001 kWh |
An energy converter is a tool that translates a measurement from one unit of energy — such as joules, kilocalories, kilowatt-hours or BTU — into another. MerchAsst's Energy Converter supports the units most commonly used in cross-border trade, energy consumption reporting, food labeling and heating equipment specifications.
Enter the value in kilowatt-hours, select "Kilowatt-hour (kWh)" as the source unit and "Kilocalorie (kcal)" as the target. The result updates instantly. The conversion factor is 1 kWh ≈ 860.421 kcal.
One kilocalorie (kcal) equals 1000 calories (cal). In food labeling, what is commonly called a "Calorie" (with a capital C) is actually one kilocalorie. This converter uses kilocalories (kcal) as the standard unit for food energy.
Yes. Select "BTU (BTU)" as the source and "Joule (J)" as the target. One BTU (British thermal unit) equals approximately 1055.06 joules, based on the International Table definition.
Yes. All conversions use internationally agreed factors (e.g. 1 kcal = 4184 J exactly, 1 kWh = 3,600,000 J exactly, 1 BTU ≈ 1055.06 J). Results display up to 6 decimal places, and the underlying calculation is never rounded before display.
