## Watts to kWh calculation formula

E_{(kWh)} = P_{(W)} × t_{(h)} / 1000

The energy **E** in kilowatt-hours (kWh) is equal to the power **P** in watts (W), multiplied by the time period **t** in hours (h), divided by 1000.

So,

*kWh = W x h / 1000*

*kilowatt-hour = watt x hour / 1000*

**For example:**

*Power (P) = 300W*

*Time period (t) = 2h*

*Energy (E) = 300W x 2h / 1000 = 0,6kWh*

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