kWh to kW Calculator
Convert kilowatt-hours (kWh) to kilowatts (kW) by dividing by time in hours: kW = kWh ÷ h. Find the average power behind an energy figure.
POWER
3 kW
IN WATTS
3,000 W
FORMULA
kW = kWh / h
EST. COST
$3.84
💡 How to Convert kWh to kW
To convert kWh to kW, divide the energy in kilowatt-hours by the time in hours. kWh measures energy (an amount); kW measures power (a rate). Dividing energy by time gives the average power used over that period.
kWh to kW formula
Example: 24 kWh over 8 hours → 24 ÷ 8 = 3 kW
Worked examples
- Electric vehicle charging: adding 60 kWh overnight in 8 hours averages 60 ÷ 8 = 7.5 kW, within the range of a typical home charger (charging losses add a little more).
- Monthly household use: 900 kWh in a 30-day month (720 hours) is 900 ÷ 720 = 1.25 kW average, even though peak demand is far higher.
- Industrial process: 100 kWh used in 5 hours averages 20 kW.
kWh to kW table
| Energy (kWh) | Time (hours) | Average power (kW) |
|---|---|---|
| 1 | 1 | 1 |
| 5 | 2 | 2.5 |
| 10 | 4 | 2.5 |
| 24 | 8 | 3 |
| 24 | 24 | 1 |
| 60 | 8 | 7.5 |
| 75 | 10 | 7.5 |
| 100 | 5 | 20 |
| 300 | 720 | 0.417 |
| 900 | 720 | 1.25 |
kW and kWh are different things
Think of kW as speed and kWh as distance. A 2 kW heater running for 3 hours uses 6 kWh. You can't convert between them without a time, and you can't add a kW figure to a kWh figure. Your electricity bill charges for kWh (energy); some commercial tariffs also charge for peak kW (demand).
Average power versus peak power
The result is an average. Real loads rise and fall: a home averaging 1.25 kW might briefly draw 8 kW or more when an oven, kettle and washing machine run together. Size breakers, inverters and generators for the peak, not the average.
Related conversions: kW to kWh · kWh to watts · kWh to Ah