Power consumption calculator
Convert watts and runtime into Wh and kWh, with optional cost at your energy rate.
How to use
1. Enter device wattage and hours of use.
2. Optionally add price per kWh.
3. Read Wh, kWh, and estimated cost.
Example
Power consumption calculator
Convert watts and runtime into Wh and kWh, with optional cost at your energy rate.
When to use
• When you need a quick estimate without spreadsheets.
• When you want privacy — calculations stay on your device.