Free · No sign-up · Current state rates
Electricity Calculators
Quick tools for working out electricity use and cost. Every calculator is prefilled with the latest average residential rate for your state.
Electricity Cost CalculatorWatts × hours × your state’s rate — hourly, monthly and yearly cost of anything that plugs in.
kWh Cost CalculatorTurn kilowatt-hours into dollars at your state’s current electricity rate.
Watts to kWh CalculatorConvert a device’s wattage and run time into kilowatt-hours per day, month and year.
Electric Bill EstimatorAdd up your appliances to estimate your monthly electric bill in any state.
Appliance cost calculators30 appliances with typical wattages and usage built in — from space heaters to EV chargers.