About the Electricity Bill Calculator
Find the electricity used and the cost of running any appliance. This tool is free, works in your browser and needs no sign-up.
How to use the Electricity Bill Calculator
Enter the power of the appliance in watts, the hours you use it each day, the number of days and the price of one kWh.
Formula used
Energy (kWh) = watts × hours × days ÷ 1000. Cost = kWh × price per kWh.
Example
With Appliance power (watts) 1000, Hours used per day 5, Days 30, Price per kWh 0.15, the calculator shows: Total cost = 22.50; Energy used = 150.00 kWh; Cost per day = 0.75.
Frequently asked questions
Is the Electricity Bill Calculator free to use?
Yes. It is completely free and you can use it as many times as you like.
How accurate is the Electricity Bill Calculator?
The calculator uses standard formulas, so the maths is exact. Real life results can differ because of fees, taxes, rounding or personal factors, so treat the answer as an estimate.
Do you store the numbers I enter?
No. All calculations run in your browser. The values you type are not sent to our server.
Disclaimer: results are estimates for information only. They are not financial, medical or professional advice.