Electricity Cost Calculator

Our electricity cost calculator helps you understand how much it costs to run any electrical appliance or device. Enter the wattage, daily usage hours, and your electricity rate to see costs broken down by hour, day, month, and year. Supports both single appliance and multiple appliance calculations to help you identify the biggest energy consumers in your home and find ways to reduce your electric bill.

star 4.8
auto_awesome AI
New
W
hrs
$ /kWh
Monthly Cost payments
$0.00
0 kWh/month
Per Hour
$0.000
Per Day
$0.00
Per Week
$0.00
Per Year
$0.00
Energy Consumption
Per Day 0 kWh
Per Week 0 kWh
Per Month 0 kWh
Per Year 0 kWh

tips_and_updates Tips

  • • Check your electricity bill for your actual rate per kWh - US average is about $0.16/kWh
  • • Appliances with heating elements (space heaters, ovens, dryers) consume the most electricity
  • • Energy Star rated appliances use 10-50% less energy than standard models
  • • Standby power (phantom load) from electronics can add 5-10% to your electric bill
  • • Running appliances during off-peak hours can save money with time-of-use rate plans
  • • LED bulbs use about 75% less energy than incandescent bulbs for the same brightness
  • • Air conditioning is typically the largest single electricity expense in warm climates
  • • Using a programmable thermostat can reduce heating and cooling costs by 10-15%

How to Use This Calculator

1

Enter Wattage

Input the appliance wattage or select from common presets

2

Set Usage Hours

Enter how many hours per day you use the appliance

3

Enter Rate

Input your electricity rate (check your utility bill)

4

View Costs

See hourly, daily, monthly, and yearly electricity costs

The Formula

Energy consumption in kilowatt-hours is calculated by multiplying the power in watts by the usage hours and dividing by 1000. The cost is then determined by multiplying kWh by your electricity rate.

kWh = Watts x Hours / 1000; Cost = kWh x Rate

lightbulb Variables Explained

  • kWh Kilowatt-hours of energy consumed
  • W Power consumption in watts
  • Hours Usage time in hours
  • Rate Electricity price per kWh ($/kWh)

tips_and_updates Pro Tips

1

Check your electricity bill for your actual rate per kWh - US average is about $0.16/kWh

2

Appliances with heating elements (space heaters, ovens, dryers) consume the most electricity

3

Energy Star rated appliances use 10-50% less energy than standard models

4

Standby power (phantom load) from electronics can add 5-10% to your electric bill

5

Running appliances during off-peak hours can save money with time-of-use rate plans

6

LED bulbs use about 75% less energy than incandescent bulbs for the same brightness

7

Air conditioning is typically the largest single electricity expense in warm climates

8

Using a programmable thermostat can reduce heating and cooling costs by 10-15%

Electricity costs depend on three factors: the power consumption of your appliances (measured in watts), how long you use them, and your utility rate per kilowatt-hour. By calculating the cost of individual appliances, you can identify the biggest energy consumers and find opportunities to save on your electric bill.

Switch to LED lighting, use Energy Star appliances, unplug devices when not in use, and consider time-of-use rate plans. Smart power strips can eliminate phantom loads, and programmable thermostats can optimize heating and cooling schedules.

Frequently Asked Questions

Related Tools

View all arrow_forward
construction
Solar Panel Calculator
 construction
EV Charging Calculator
 construction
Fuel Economy Calculator
 timer
Carbon Emission Calculator
sell

Tags

electricity cost calculator electric bill calculator energy cost calculator power consumption calculator electricity usage calculator kWh calculator appliance energy cost calculator watt to kWh calculator
verified

Data sourced from trusted institutions

All formulas verified against official standards.

U.S. Energy Information Administration open_in_new ENERGY STAR open_in_new