How to Calculate Electricity Costs
Monitoring your electricity consumption helps save money and reduce your carbon footprint. Our calculator helps you estimate the energy consumption and cost of any electrical appliance per month and year.
Calculation Formula
Monthly kWh Consumption = (Power in Watts / 1000) × Hours per Day × Days per Month
Monthly Cost = Monthly kWh × Rate per kWh
Yearly Cost = Monthly Cost × 12
Average Power Consumption of Common Appliances
- LED Light Bulb: 8-15 W
- Refrigerator: 150-300 W (runs 24/7)
- TV (LED): 80-200 W
- Desktop Computer: 200-500 W
- Laptop: 50-100 W
- Washing Machine: 500-2000 W
- Electric Kettle: 1500-2000 W
- Microwave: 800-1200 W
- Iron: 1000-1800 W
- Air Conditioner: 1000-3500 W
- Space Heater: 1500-2000 W
- Dishwasher: 1200-2400 W
Average Electricity Rates in the USA (2026)
- National Average: $0.14/kWh
- Hawaii: $0.32/kWh (highest)
- Louisiana: $0.09/kWh (lowest)
- California: $0.23/kWh
- New York: $0.19/kWh
- Texas: $0.12/kWh
How to Save on Electricity
- Switch to LED Bulbs — save up to 90% on lighting costs
- Unplug Devices — phantom power can cost $100-200/year
- Use Energy Star Appliances — 10-50% more efficient
- Smart Power Strips — eliminate standby power consumption
- Adjust Thermostat — 7-10°F adjustment saves 10% annually
- Regular Maintenance — clean filters, check seals on fridge/freezer
Tips for Reducing Energy Bills
- Run dishwasher and washing machine only when full
- Use cold water for laundry when possible
- Install a programmable thermostat
- Seal air leaks around windows and doors
- Use ceiling fans instead of AC when possible
- Consider time-of-use pricing plans for off-peak savings