INTERACTIVE TOOL
Electricity cost calculator
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How to use this tool
- Enter power in watts.
- Set daily hours and days of use.
- Enter the energy tariff per kilowatt-hour.
Formula or method usedkWh = watts ÷ 1000 × hours used. Cost = kWh × tariff.
Worked example
A 1000-watt appliance used for two hours consumes two kilowatt-hours. At 0.50 each, energy costs 1.00.
Assumptions and limits
Fixed charges, taxes and variable equipment cycles are excluded.
Frequently asked questions
Can I estimate monthly cost?+
Yes. Enter daily hours and the number of usage days.
What happens to my inputs?+
Calculation inputs are processed locally in your browser. Favorites and preferences may be saved on this device. The site may perform separate network requests for live panels; these do not include the values entered into this local calculator. Do not paste secrets into public tools.
How should I check the result?+
Fixed charges, taxes and variable equipment cycles are excluded.