My friend kilowatt-hour

Learn more about the energy unit kilowatt-hour. Learn how to convert energy from joules to kilowatt-hours and back using the calculator.

How much energy is one kilowatt-hour?

One kilowatt-hour ( $k W h$ ) means that one kilowatt of energy is consumed in one hour. Thus, the spelling of $k W h$ looks in a more understandable form

k W \cdot h

where $h$ is one hour or $3600$ seconds.

If we want to know how many joules are in one kilowatt-hour, we need to calculate

1 k W h = 1 \cdot k W \cdot h = 1 \cdot 1000 \cdot W \cdot 3600 \cdot s = 3, 6 \cdot 10^{6} J

Calculator: from kilowatt-hours to joules

Thecalculator converts energy from joules to kilowatt-hours or vice versa, where $1 k W h = 3.6 \times 10^{6} J$ . When using the calculator, enter the data in the table, the answer will appear in the last row of the table.

$J \to k W h$

Energy $J$
Energy $k W h$

$k W h \to J$

Energy $k W h$
Energy $J$