How to use it
- Enter device power and select watts or kilowatts.
- Enter daily operating hours and the electricity price per kWh.
- Choose the number of days and calculate.
Electricity Cost Calculator
Estimate energy use and cost over a selected number of days.
Important: This calculator is for educational and estimation purposes only. It is not electrical safety, installation, engineering, or code-compliance advice. Always consult a qualified electrician or engineer for real-world electrical work.
About the Electricity Cost Calculator
This estimator combines device power, daily use and a price per kWh to show energy and cost for a period.
How it works
Daily kWh equals power in kW × hours per day. Period cost equals daily kWh × days × price per kWh.
Example
A 1 kW device used 8 hours daily for 30 days consumes 240 kWh. At 0.25 per kWh, the estimate is 60 in the same currency units.
Notes
Actual bills can include tiered rates, taxes, fixed charges, demand charges and varying usage that this simple estimate does not include.