Electricity Bill Calculator
Estimate your monthly electricity bill by appliance. Adjust wattage and daily usage hours for 20 common appliances, add custom devices, and see your top energy consumers.
| Appliance | Watts | Hrs/Day | kWh/Mo |
|---|
Frequently Asked Questions
Check the label on the back or bottom of the appliance — it usually lists watts or amps and volts (Watts = Amps × Volts). You can also find it in the product manual or manufacturer website. A smart plug with energy monitoring (like TP-Link Kasa) can measure actual consumption in real time.
The US Energy Information Administration (EIA) reports the average monthly residential electricity bill is around $130–140 (1,000–1,100 kWh at $0.12–0.13/kWh). Bills vary widely: southern states using heavy AC pay more in summer; northern states pay more in winter with electric heat. Hawaii has the highest average at over $0.33/kWh.
The US average grid emission factor is approximately 0.386 kg CO2 per kWh (EPA, 2022). This varies by region — states with more renewables like California (0.2 kg/kWh) or nuclear have lower factors; coal-heavy regions like the Midwest can exceed 0.5 kg/kWh. Switching to solar or green energy tariffs can significantly reduce your carbon footprint.
Heating and cooling account for about 40% of home energy use. Electric water heaters (4,500W) and HVAC systems (2,000–5,000W) are the biggest consumers. Clothes dryers (5,000W), electric ovens (2,500W), and refrigerators (150–400W running but on 24/7) are also major contributors. LED lighting and modern electronics use relatively little.
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