Share this page
Copy the link or send it to your audience.
Point your camera at the QR code to open this page on any device.
Air Conditioning Cost Calculator
Size your AC and estimate its running cost.
Consumption = area × W/m² × hours × days / 1000. BTU needed ≈ area in m² × 340. Multiply kWh by your price for the cost.
How it works
Consumption = area × W/m² × hours × days / 1000. BTU needed ≈ area in m² × 340. Multiply kWh by your price for the cost.
Worked example
40 m² × 60 W/m² × 6 h × 90 days = 1,296 kWh ≈ 13,600 BTU needed.
Recommendations
- A well-insulated room needs ~60 W/m², sunny rooms more
- Oversized AC cools fast but cycles poorly
- Set the thermostat 1°C higher to save ~6%
Tips & advice
- Clean the filter every month in summer
- Close blinds during the hottest hours
- Use a fan to assist the AC and raise the setpoint
Fuel Consumption Calculator
Find your real fuel consumption from a full tank test.
Fuel Cost Calculator
Know the cost of your trip before you leave.
Weeks Between Dates Calculator
Find out exactly how many weeks separate two dates.
Months Between Dates Calculator
Know how many months separate any two dates.
Air Conditioning Cost Calculator
Size your AC and estimate its running cost.
Use the calculatorInvoice Generator FAQs
Yes, all 20 home calculators are 100% free, private and run entirely in your browser. No account needed.
They use standard industry formulas. Always round up for materials and confirm with a professional for structural work.
The calculators use metric units (meters, liters, m³). Convert imperial measurements beforehand if needed.
No. Calculations happen instantly in your browser and nothing is sent to any server.
More Free Tools
Explore the whole collection — no signup, 100% free & private.