A energy converter converts between different units quickly and accurately.
Convert between Joules, calories, kilowatt-hours, BTU and more.
1 kJ = 1000 J | 1 cal = 4.184 J | 1 kcal = 4184 J
1 kWh = 3,600,000 J | 1 BTU = 1055.06 J | 1 eV = 1.602×10⁻¹⁹ J
Joule (J) is the SI unit of energy.
The Energy Converter uses standard formulas to calculate your results. Enter your values in the input fields and click Calculate to see instant results.
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The Energy Converter uses verified formulas and provides accurate estimates for informational purposes. Results are calculated instantly in your browser.