Space Heater Cost Calculator — Free Online Calculator
Calculate how much a space heater costs to run per hour, day, and month based on wattage and electricity rate.
How to Use This Calculator
Select heater wattage, enter daily usage hours and electricity rate.
The Formula Explained
Cost per hour = Watts / 1000 × Rate. A 1500W heater at $0.15/kWh costs $0.225 per hour.