Watts to kWh Calculator

Watts to kWh Calculator

Energy in kilowatt-hours (kWh) to power in watts (W) calculator and calculation formula.
Enter the energy in kilowatt-hours, consumption time period in hours and press the Calculate button::

Enter power in watts: W
Enter time in hours: hr
Energy result in kilowatt-hours:

kWh to watts calculator ►

Watts to kWh calculation

The energy E in kilowatt-hours (kWh) is equal to the power P in watts (W),

times the time period t in hours (hr) divided by 1000:

E(kWh) = P(W) × t(hr) / 1000


Watts to kWh calculation ►


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