Electricity Cost Calculator
Estimate energy use and cost from watts, daily use, days, and price per kWh.
Enter values
Result
See the kWh behind the estimated cost
Power in watts is divided by 1,000, then multiplied by hours per day and the number of days. A 1,000 W appliance used for 2 hours a day over 30 days uses 60 kWh.
The cost uses the price per kWh you enter. This makes it useful for comparing appliances or usage schedules without assuming a regional electricity tariff.
About this tool
Estimate kWh and running cost for an appliance over a chosen period. You can also compare different usage times or power ratings.
The estimate does not include standing charges, tiered pricing, taxes, or standby power. Enter a price per kWh that matches your bill.
Frequently asked questions
What is one kWh?
A 1 kW appliance running for one hour uses 1 kWh. A 1000 W appliance running for two hours uses 2 kWh.
Will this match my electricity bill?
Not exactly. It estimates the appliance's energy cost and does not include standing charges or tiered rates.
Does it fetch electricity prices?
No. It uses only the price per kWh you enter.
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