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Electricity Cost Calculator
Estimate electricity cost from device wattage, hours used per day, days per month, and your energy rate.
● Live calculatorInputs
Primary result
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Monthly cost = watts × hours × days ÷ 1000 × rate
How this calculator works
Estimate electricity cost from device wattage, hours used per day, days per month, and your energy rate.
The calculator keeps the inputs visible alongside the result so you can compare assumptions, change one value at a time, and copy or print the current estimate.
Frequently asked questions
Does this include my full utility bill?
No. Taxes, delivery charges, tiers, and other fees can change the final bill.
What is a kilowatt-hour?
It is one kilowatt used for one hour; wattage is divided by 1,000 to get kilowatts.