Watts to kWh Calculator
Convert watts to kilowatt-hours — or kWh back to watts — by setting how long the load runs. kWh is the energy unit your utility bills, so this turns an appliance's wattage into the energy it uses. To put a dollar figure on it, jump to the electricity cost calculator.
Energy used
6 kWh
- Power
- 1,500 W
- Over
- 4 h
- If daily, per month
- 180 kWh
Energy (kWh) = power (W) × hours ÷ 1,000. To turn kWh into a dollar figure at your electricity rate, use the electricity cost calculator linked below.
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This tool's methodology and data follow US standards and authoritative public datasets: