How to Calculate Electricity Cost
Calculation Example
Here's a practical example using the Electricity Cost Calculator: Enter your values in the fields above to get instant results. Try adjusting the parameters to compare different scenarios. This tool helps you make informed decisions by providing accurate electricity cost calculations based on standard formulas and up-to-date data.
Frequently Asked Questions
How do you calculate electricity cost?
Cost = (Watts × Hours ÷ 1,000) × $/kWh. Convert watts to kilowatts, multiply by hours, then by your rate.
What is a kWh?
A kilowatt-hour equals using 1,000 watts for one hour. It's how utilities measure consumption.
What is the average electricity rate?
About $0.16/kWh in the US. Ranges from $0.10 in some states to $0.30+ in Hawaii and Connecticut.
Which appliances use the most power?
Central AC (3,500W), water heaters (4,500W), clothes dryers (5,000W), and space heaters (1,500W).
How can I lower my bill?
Switch to LEDs, use a programmable thermostat, unplug standby devices, and wash clothes in cold water.