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🔋 Energy Converter

Convert Joules, kWh, calories, BTU, electron volts, and more energy units.

=1 Joule (J)≡0.001 Kilojoule (kJ)
Quick Conversions

About Energy Conversions

How do I convert energy units?

Enter any value in the input field, select your source unit and target unit from the dropdowns, and Converzion.io calculates the result instantly. No button press required.

Which energy units are supported?

Joule (J), Kilojoule (kJ), Megajoule (MJ), Calorie (cal), Kilocalorie (kcal), Kilowatt-hour (kWh), Megawatt-hour (MWh), BTU, Electron Volt (eV), Foot-pound (ft·lbf), Erg (CGS).