Unit Converter
Convert between common units of length, weight, volume, and temperature.
- Browser-based
- No signup
Everyday Tools
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.
Enter appliance details to estimate running cost.
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.
Use the Electricity Cost Calculator form near the top of this page. Enter the values you know, run the tool, and review the results panel. You can change inputs and run it again. Processing stays in your browser and is not uploaded to Utilnivo servers.
Example: open Electricity Cost Calculator, enter a realistic set of inputs for your situation, and note the primary result. Change one input—such as an amount, rate, or option—and compare how the output changes so you can choose a scenario that fits your needs.
Second example: try edge cases that matter for your task—such as zero values, a different unit system, or a second file—and confirm the tool shows a clear result or a helpful validation message.
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.
This tool runs in your browser for convenience. Results are estimates or transformations based on the inputs you provide and may not cover every edge case.
Kilowatt-hours equal watts divided by 1000, times hours per day, times the number of days.
Watts are usually on the appliance label or manual. Your electricity rate is on your utility bill as price per kWh.
No. Results estimate energy cost from usage and rate only.