Daily Cost $0.96
Monthly Cost $28.80
Yearly Cost $350.40
Daily kWh 8 kWh
Monthly kWh 240 kWh
Yearly kWh 2,920 kWh
Electricity Cost Calculator
Calculate how much it costs to run any electrical appliance. Enter the wattage, usage hours, and your electricity rate.
How Electricity Cost Is Calculated
Electricity is measured in kilowatt-hours (kWh). The formula is:
- kWh = (Watts × Hours) ÷ 1000
- Cost = kWh × Price per kWh
- 1 kilowatt (kW) = 1000 watts (W)
For example, a 100W light bulb running for 10 hours uses 1 kWh (100 × 10 ÷ 1000).
Common Appliance Costs
At $0.12/kWh, running for 8 hours/day:
- LED bulb (10W): $0.01/day, $3.50/year
- Laptop (50W): $0.05/day, $17.50/year
- TV (100W): $0.10/day, $35/year
- Space heater (1500W): $1.44/day, $525/year
FAQ
- How do I find the wattage of an appliance?
- Check the label on the appliance, the user manual, or the manufacturer's website. Common examples: LED bulb (10W), laptop (50W), refrigerator (150W), space heater (1500W).
- What is the average electricity price?
- US average is around $0.12-0.15 per kWh, but varies by state ($0.08 in Louisiana to $0.30+ in Hawaii). Check your electric bill for your actual rate.
- How can I reduce electricity costs?
- Use energy-efficient appliances, unplug devices when not in use, switch to LED lights, adjust thermostat settings, and run major appliances during off-peak hours.
- What uses the most electricity at home?
- Typically: HVAC (heating/cooling) 40-50%, water heater 14%, washer/dryer 13%, lighting 9%, refrigerator 4%, and electronics 4%.