Electricity Bill Calculator
Estimate your monthly electricity bill based on appliance usage, wattage, and hours of use.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator estimates your monthly electricity cost for a single appliance. Follow these steps:
- Appliance Power (Watts): Enter the wattage of your appliance (e.g., 1000 for a 1 kW heater).
- Hours Used Per Day: Enter the average hours the appliance runs daily (e.g., 5).
- Days Used Per Month: Enter how many days per month you use it (e.g., 30).
- Rate per kWh ($): Enter your electricity rate in dollars per kilowatt-hour (e.g., 0.12).
- Click Calculate to see the estimated monthly cost and energy usage breakdown.
All inputs must be positive numbers. The result shows total cost and the calculation: (Watts × hours × days) / 1000 = kWh, then multiplied by rate.
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Frequently Asked Questions
The bill is calculated by multiplying the appliance power in watts by hours used per day and days used per month, dividing by 1000 to get kWh, then multiplying by the rate per kWh.
Electricity rates vary by location, but a common average is around $0.12 per kWh in the United States. Check your bill for your exact rate.
This calculator estimates cost for a single appliance. For multiple appliances, calculate each separately and sum the costs.
