Appliance Electricity Cost Calculator
Estimate how much it costs to run an appliance based on its wattage, hours used and your rate · free, no signup
See Appliance Electricity Cost Calculator in action
Free 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.
Key features
Cost per day, month and year
See the running cost broken down across all three periods at once.
Typical wattage presets
Common appliances pre-filled if you don't know the exact wattage.
Compare two appliances
See side by side which one actually costs more to run.
Uses your real electricity rate
Enter your own rate per kWh for an accurate local estimate.
How to use it
- Pick an appliance preset or enter its wattage manually.
- Enter how many hours a day you typically use it.
- Enter your electricity rate per kWh (check a recent bill).
- Read the cost per day, month and year.
Worked example
Example
A 1,500W space heater run 4 hours a day at $0.16/kWh → 1.5 kW × 4h × $0.16 = $0.96/day, about $29/month, about $350/year.
Who uses this tool
Homeowners and renters
Identify which appliances are driving up the electricity bill.
People comparing appliances before buying
Estimate the running cost difference between two models.
Anyone on a tight budget
Find easy savings by seeing which habits cost the most.
Tips for the best results
- Check the appliance's actual wattage label rather than relying only on a generic preset, since models vary widely.
- Remember that appliances with a compressor (fridges, air conditioners) don't run continuously — factor in their duty cycle, not just hours plugged in.
- Compare against your actual electricity rate from a recent bill, since rates vary a lot by region, provider and time of use.
- Small, always-on devices (routers, chargers left plugged in) add up more than people expect over a full year — check those too.
Common mistakes to avoid
- Using an appliance's peak/startup wattage instead of its typical running wattage, which overstates cost.
- Assuming a fridge or AC runs 24 hours at full power — they cycle on and off, so real usage is lower than the nameplate wattage times 24.
- Using a rough national average electricity rate instead of the actual rate on your bill, which can be significantly different.
Why use AZRS QuickFix?
It is 100% free, needs no signup and has no watermark or usage limits. The tool runs in your browser, so what you type stays on your device, and it works on phones, tablets and desktops. New tools are added every week — bookmark this page or browse the full QuickFix toolbox.
Frequently asked questions
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.
Is my data saved?
No, this is a live calculator only; nothing is stored or sent anywhere.