CalcMate

Electricity Cost Calculator

Find what any appliance costs to run: watts, hours of use, and your electricity rate.

About the Electricity Cost Calculator

Energy (kWh) = watts / 1000 × hours. Cost = kWh × rate. A 1500 W space heater running 3 hours a day at $0.15/kWh costs about $20 a month, often more than the appliance itself over a winter.