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Everyday Tools
Utilnivo
Electricity Cost Calculator
Estimate how much an appliance costs to run.
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- On your device
Browse more in Everyday Tools or all tools.
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Your information stays on your device and is not uploaded.
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Enter appliance watts, hours per day, number of days, and your electricity rate per kWh to estimate energy use and running cost, including a 30-day monthly estimate.
How to use this tool
1. Enter appliance power in watts. 2. Enter hours used per day and number of days. 3. Enter your electricity rate per kWh. 4. Click Calculate. 5. Review kWh consumed and estimated cost for the period.
Worked example
Example: a 1,000 W heater run 2 hours/day for 30 days at $0.15/kWh uses 60 kWh and costs about $9.00.
How it works
Enter an appliance’s power in watts, how many hours it runs per day, the number of days, and your electricity rate per kilowatt-hour. Energy use is watts ÷ 1000 × hours × days. Utility fees and tiered rates are not included.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
How is energy use calculated?
Kilowatt-hours equal watts divided by 1000, times hours per day, times the number of days.
Where do I find watts and the kWh rate?
Watts are usually on the appliance label or manual. Your electricity rate is on your utility bill as price per kWh.
Does this include utility fees?
No. Results estimate energy cost from usage and rate only.
Related pages
- Browse all free online tools on Utilnivo
- Explore more everyday tools on Utilnivo
- Unit Converter — Convert between common units of length, weight, volume, and temperature.
- Fuel Cost Calculator — Estimate trip fuel costs from distance and price.
- Age Calculator — Calculate exact age in years, months, and days from a date of birth.
- Date Difference Calculator — Count days, weeks, and months between two dates.
- BMI Calculator — Calculate body mass index using metric or US units with a general classification.
- Currency Converter with Custom Exchange Rate — Convert amounts using an exchange rate you enter (not live market rates).
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