Try the Appliance Electricity Cost Calculator
Free electricity cost calculator. Enter an appliance's wattage, how many hours a day you use it and your electricity rate per kWh.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
Sample input: Wattage (W) = 1500; Hours used per day = 4; Electricity rate ($ per kWh) = 0.16
What is the Appliance Electricity Cost Calculator?
Electricity bills list a total, but rarely break down which appliance is actually driving the cost — is it the space heater, the old fridge, or leaving the PC on overnight? This calculator answers that directly: enter an appliance's wattage (found on its label or manual), how many hours a day you typically run it, and your electricity rate per kilowatt-hour, and it works out the exact running cost per day, month and year.
A built-in list of typical wattages for common appliances (space heater, fridge, washing machine, TV, laptop, air conditioner and more) gives you a starting estimate even if you don't know the exact wattage, and you can compare two appliances side by side to see which one is actually costing more to run.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
See the running cost broken down across all three periods at once.
Common appliances pre-filled if you don't know the exact wattage.
See side by side which one actually costs more to run.
Enter your own rate per kWh for an accurate local estimate.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
Homeowners and renters
Identify which appliances are driving up the electricity bill.
Try it freePeople comparing appliances before buying
Estimate the running cost difference between two models.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
How do I find my appliance's wattage?
Check the label on the appliance itself, its manual, or the box it came in — it's usually listed in watts (W) or sometimes amps, which this calculator can also convert given your voltage.
Where do I find my electricity rate per kWh?
It's on your electricity bill, usually listed as a rate per kilowatt-hour (kWh); rates can also vary by time of day under some plans.
Does this account for appliances that cycle on and off, like a fridge?
The preset wattages for cycling appliances use typical average running wattage rather than nameplate peak wattage, but for the most accuracy, use a plug-in watt meter if you have one.
Can I compare two appliances at once?
Yes, use the comparison mode to see two appliances' costs side by side.
Is this calculator accurate for solar or time-of-use billing?
It gives a flat-rate estimate; for time-of-use or solar-offset billing, treat the result as an approximation since your effective rate may vary by time of day.
More free tools
Related to the Appliance Electricity Cost Calculator.
Try the Appliance Electricity Cost Calculator now
Estimate how much it costs to run an appliance based on its wattage, hours used and your. Free to use.
Try it free