By CalculatorInn Team · Updated: 2026-03-22 · Free & accurate · Instant results
Estimate the electricity cost of running any appliance or device based on its wattage, hours of use, and your local electricity rate.
Interactive Electricity Cost Calculator
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Cost = (Watts × Hours / 1000) × Rate per kWh
Convert watts to kilowatts by dividing by 1000. Multiply by hours of use for daily kWh. Multiply by your electricity rate for daily cost.
The US average is about $0.12-0.16 per kWh, but rates vary widely. California averages $0.25+, while states like Louisiana average $0.09. Check your utility bill for your exact rate.
A typical US household uses about 30 kWh per day (900 kWh/month). Major consumers: AC (3,000-5,000W), electric dryer (5,000W), water heater (4,500W), oven (2,000-5,000W).
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