Appliance Electricity Cost Calculator
Estimate one appliance’s electricity use and cost from watts, daily hours and your own price per kWh. Choose the number of days to compare periods.
- Free
- No sign-up
- Runs in your browser
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Result
Enter the required values to see your result. Use the example to try the complete calculation.
Use average operating power and the tariff from your bill. Standing charges, taxes, time-of-use rates and cycling are not inferred. Hours must be between 0 and 24. Use 1 to 3660 days, as a whole number.
How this calculation works
Appliance Electricity Cost Calculator
Estimate one appliance’s electricity use and cost from watts, daily hours and your own price per kWh. Choose the number of days to compare periods.
Units and limits
Use average operating power and the tariff from your bill. Standing charges, taxes, time-of-use rates and cycling are not inferred. Hours must be between 0 and 24. Use 1 to 3660 days, as a whole number.
Formulas
- Calculation
- kWh = watts / 1000 × hours/day × days; cost = kWh × price/kWh
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Discover VISU LinkHow to use it
- Choose the operation when available and enter your own values in the labelled fields.
- Check the units and the limits explained below before interpreting the answer.
- Read the result and its details. Copy it or download a result card; no account is required.
Examples
Worked example
1000 W for two hours a day over 30 days uses 60 kWh. At 0.80 per kWh, the cost is 48.
Another case
100 W for five hours a day over ten days uses 5 kWh.
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Questions
What does this tool calculate?
Estimate one appliance’s electricity use and cost from watts, daily hours and your own price per kWh. Choose the number of days to compare periods.
Which inputs and units should I use?
Use average operating power and the tariff from your bill. Standing charges, taxes, time-of-use rates and cycling are not inferred. Hours must be between 0 and 24. Use 1 to 3660 days, as a whole number.
Can I check a worked example?
1000 W for two hours a day over 30 days uses 60 kWh. At 0.80 per kWh, the cost is 48.
Are my input values uploaded or stored?
No. The calculation runs in this browser. Typed values are not sent to analytics, placed in the page URL or saved by the calculator. Copying or downloading is an action you choose.
Do I need an account or a paid plan?
No. The calculation, example, result copy and result card are available without registration. VISU services are an optional next step.