Calculators
Electricity Cost Calculator
Estimate the electricity cost of running any appliance. Enter wattage, usage hours, and your electricity rate to see daily, monthly, and yearly costs.
Free · Runs in your browser · No signup · Files stay on your device
kWh / Day
0.80
Daily Cost
$0.10
Monthly Cost
$2.88
Yearly Cost
$35.04
How to use
How to use Electricity Cost Calculator
- 1Enter the appliance wattage (in watts).
- 2Enter the number of hours used per day.
- 3Enter your electricity rate ($/kWh from your bill).
- 4The calculator shows daily, monthly, and yearly costs.
Tips
Quick tips
- Check the wattage label on your appliance or its manual. Common: LED bulb 10W, laptop 50W, AC unit 1500W.
- Find your electricity rate on your power bill. The US average is about $0.12/kWh.
- Reducing usage by even 1 hour/day can save noticeably over a year.
FAQ
Frequently asked questions
How do I find my electricity rate?
Check your electricity bill. It typically lists the rate in cents per kWh or dollars per kWh. The US average is about $0.12/kWh.
What is a kilowatt-hour (kWh)?
A unit of energy equal to using 1,000 watts for 1 hour. A 100W bulb running for 10 hours uses 1 kWh.
Why is my actual bill different?
Bills may include fixed fees, tiered rates, taxes, and demand charges that this simple calculator doesn't account for.
How do I reduce electricity costs?
Use energy-efficient appliances (LED vs incandescent), reduce usage hours, unplug devices when not in use, and use programmable timers.
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