Know the likely bill impact
Compare hourly, daily, monthly, and seasonal cost instead of guessing from wattage alone.
Free AC electricity cost calculator
See what your AC costs—before the bill arrives.
Enter your air conditioner wattage, daily runtime, and electricity rate to calculate hourly, monthly, and seasonal cooling costs. Then download the complete estimate as a ready-to-use CSV.
FreeNo signup or emailProcessed on your device
Useful for: renters, homeowners, facility managers, and anyone planning a summer electricity budget.
Sample monthly cooling estimate
$58.32
Cooling cost calculator
Turn your AC settings into a practical electricity budget.
Results update immediately. Adjust runtime or efficiency to see which change has the greatest effect before downloading your plan.
Instant estimate
Your cooling budget
Based on the assumptions entered on this device.
Estimated cost per 30-day month
$58.32
216.00 kWh per month
Per hour$0.24
Per day$1.94
Full season$233.28
Season usage864.00 kWh
Running the AC 1 hour less per day would save about $29.16 over this cooling season.
FreeNo registrationNo data upload
What you get
Make a cooling decision with numbers you can use.
The calculator translates technical power ratings into budget figures and practical savings scenarios.
Test a smaller change
See the estimated benefit of reducing runtime by one hour or improving average energy use by 10%.
Keep a usable record
Download your assumptions, calculations, and savings options in a spreadsheet-ready CSV file.
How it works
From rating label to budget in three short steps.
Enter the AC rating
Add rated watts and an average load factor. Use 100% for a conservative maximum-power estimate.
Add your usage and rate
Enter daily operating hours, cooling-season days, and the per-kWh rate shown on your bill.
Download the result
Save the generated CSV and use it in a household budget, spreadsheet, or equipment comparison.
Practical savings guide
Compare changes before changing your routine.
Each option is calculated from your current inputs. Actual savings vary with weather, insulation, thermostat settings, and equipment behavior.
Three scenarios included in your CSV
Use these as planning comparisons—not promises. The export keeps the original assumptions beside every estimate so the numbers remain understandable later.
| Scenario | Season estimate |
|---|---|
| Current settings | $233.28 |
| 1 hour less each day | $204.12 −$29.16 |
| 10% lower average load | $209.95 −$23.33 |
Frequently asked questions
Understand what the estimate does—and does not—tell you.
How is AC electricity cost calculated?
Average kilowatts equals rated watts ÷ 1,000 × load factor. That figure is multiplied by operating hours and your electricity price per kWh.
What load factor should I use?
If you do not know, 75% is a reasonable planning input—not a universal measurement. Use 100% for a conservative maximum-power scenario. Variable-speed and cycling systems may average less.
Can this predict my exact electricity bill?
No. Weather, insulation, thermostat settings, maintenance, time-of-use rates, taxes, and utility fees can all change the final bill.
Where do I find wattage and electricity price?
Look for watts or input power on the AC rating label or manual. Your utility bill usually shows the energy price in dollars, cents, or another currency per kWh.
What is included in the downloaded CSV?
The file contains every input, estimated energy use, hourly through seasonal costs, and savings comparisons for lower runtime and lower average load.
Is any information sent to a server?
No. Calculation and file generation occur entirely in your browser. The tool does not request an email address or upload your inputs.
Take your cooling estimate into your next budget decision.
Your current inputs and results are already prepared. Download the CSV now, then return to compare another room, unit, or runtime.
FreeNo signup or emailGenerated locally