Electricity Cost Calculator
Estimate what it costs to run an appliance based on its wattage, daily usage, and your electricity rate.
How wattage becomes a dollar figure
Utilities bill in kilowatt-hours (kWh), not watts — this tool converts an appliance's wattage and daily runtime into kWh, then multiplies by your rate. A 1,500W space heater run 5 hours a day uses 7.5 kWh daily, which adds up faster than most people expect.
Why your actual bill may run higher
Many utilities charge tiered or time-of-use rates rather than one flat price per kWh, and this estimate uses a single rate throughout. If your utility bills more per kWh once you cross a usage threshold, or charges more during peak hours, your real cost will be higher than this straight-line estimate.