Power in watts (W) to energy in kilowatt-hours (kWh) 計算機 and calculation formula.
Enter the power in watts, consumption 時間 period in hours and press the 計算 button:
The energy E in kilowatt-hours (kWh) is equal to the power P in watts (W),
times the 時間 period t in hours (hr) divided by 1000:
E(kWh) = P(W) × t(hr) / 1000
