Use this free Appliance Cost Calculator to estimate how much it costs to run common household appliances. You can use it for devices such as space heaters, refrigerators, TVs, fans, washing machines, dryers, microwaves, pumps, computers, and other electric appliances.

To use the calculator, enter the appliance name, power rating in watts, hours used per day, days used per month, and your electricity rate in dollars per kilowatt-hour. The calculator will estimate the appliance’s daily energy use, monthly energy use, daily cost, monthly cost, and yearly cost.

This tool is useful because many appliances seem inexpensive to run for a short time, but their cost can add up when used every day. High-wattage appliances such as heaters, dryers, ovens, and large pumps usually have a bigger impact on your monthly electricity bill.

The default electricity rate is set to $0.17 per kWh as a general U.S. residential estimate. Your actual rate may vary depending on your state, utility provider, electricity plan, taxes, and additional fees.

Appliance electricity cost is calculated by converting watts to kilowatts, then multiplying by usage time and electricity rate.

Power in kW = watts ÷ 1000

Daily energy use = power in kW × hours used per day

Monthly energy use = daily energy use × days used per month

Monthly cost = monthly energy use × electricity rate

For example, a 1500-watt space heater uses 1.5 kWh per hour. If it runs for 6 hours per day, it uses 9 kWh per day. At $0.17 per kWh, that would cost about $1.53 per day, or about $45.90 per month if used for 30 days.

You can reduce appliance electricity costs by using high-wattage devices for fewer hours, unplugging devices that are not in use, choosing energy-efficient models, and checking whether older appliances are consuming more power than expected.

For appliances that run all day, such as refrigerators or freezers, proper maintenance is important. Clean coils, check door seals, avoid overloading, and keep the appliance in a well-ventilated area.

For appliances used only part of the day, such as heaters, fans, TVs, and computers, reducing daily usage time can make a noticeable difference over a full month.

This calculator provides estimates only. Actual electricity costs may vary depending on appliance efficiency, operating mode, usage behavior, electricity rate, taxes, utility fees, and local energy pricing.

You can usually find the wattage on the appliance label, user manual, product page, or technical specifications. If the appliance shows amps and volts instead of watts, watts can often be estimated by multiplying volts by amps.

High-wattage appliances usually use the most electricity. Examples include space heaters, electric dryers, ovens, water heaters, air conditioners, and large pumps.

Some appliances and electronics use standby power even when turned off. This is often called phantom load or standby energy. Unplugging unused devices or using a smart power strip may help reduce this small but continuous usage.

No. The result is an estimate. Actual cost depends on the appliance’s real power draw, operating cycle, efficiency, settings, electricity rate, and utility charges.

The default value is used as a general U.S. residential estimate. You can replace it with the rate shown on your own electricity bill for a more personalized estimate.

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