Energy Converter
Convert between Joules, kilojoules, watt-hours, kWh, calories, BTU, electronvolts, and more instantly
About Energy Converter
Convert between energy measurement units: Joules (J), kilojoules (kJ), watt-hours (Wh), kilowatt-hours (kWh), calories (cal), kilocalories (kcal), British Thermal Units (BTU), electronvolts (eV), and foot-pounds (ft lbf). Essential for physics, nutrition labeling, electrical billing, and engineering calculations.