How to use electricity cost calculator
Estimate energy use in kilowatt-hours and the running cost of an appliance from watts, hours per day, days and an entered unit price.
- Enter the numbers, dates or units you want to compare.
- Choose the calculation options and calculate.
- Review the result together with the assumptions shown.
Try this next
Estimate the monthly use of a 100-watt device that runs eight hours each day.
This uses a flat price per kWh and excludes fixed charges, taxes, tiered tariffs and changes in an appliance’s actual draw.
Questions, answered.
Is electricity cost calculator free to use?
Yes. This tool is part of Nepocore’s free browser toolkit. There is no paid tier, file-download gate or application account required.
What should I check before using the result?
This uses a flat price per kWh and excludes fixed charges, taxes, tiered tariffs and changes in an appliance’s actual draw.
Does this tool upload my files or text?
The tool processes its input in your browser. File contents and text are not sent to a processing server. See the privacy page for local storage and hosting details.