J, kWh, BTU unit conversion
W = F × d (1 J = 1 N·m = 1 kg·m²/s²)
1 J = 0.239006 cal
1 J = 2.77778 × 10⁻⁷ kWh
1 J = 0.000947817 BTU
1 kWh = 3,600,000 J
1 cal = 4.184 J
1 BTU = 1,055.06 J
1 eV = 1.602 × 10⁻¹⁹ J
Power (P) = Energy (E) / Time (t)
Work (W) = Force (F) × Distance (d)
Kinetic energy: KE = ½mv²
Potential energy: PE = mgh
Food Calorie (Cal) equals kilocalorie (kcal)
SI base unit. Work done by 1 N force over 1 m distance
Heat required to raise 1g of water by 1°C
Unit of energy. Energy consumed by 1 kW for 1 hour
A tool that converts between 11 different energy units in real-time, including Joule (J), kilowatt-hour (kWh), calorie (cal), BTU, and electron volt (eV). Enter a value to see conversion results for all units simultaneously.