Air Conditioner BTU Calculator

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AC BTU Calculator

Calculate the required cooling capacity (BTU/hr) for your room or building. Uses the standard BTU = Area × 25 + (People × 600) + (Appliances × 400) method.

Room Type *

Climate *

Room Length *

Room Width *

Ceiling Height *

Number of People *

people

Sun Exposure

Insulation Quality

Number of Appliances *

units

TVs, computers, ovens, refrigerators, etc.

Window Type

Show Steps

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Recommended Cooling Capacity

—

BTU/hr

—

📐

Room Area

—

sq ft

👤

People Load

—

BTU/hr

💻

Appliance Load

—

BTU/hr

🌞

Adjustment

—

📋

Calculation Breakdown

Step-by-step BTU calculation

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Recommended AC Units

Common AC capacities for your BTU requirement

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BTU Calculation Formulas

Standard HVAC sizing equations

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Cooling Efficiency Tips

Maximize your AC performance

⚡ HVAC Disclaimer: This calculator provides estimates for preliminary sizing. For accurate AC sizing, consult an HVAC professional who will perform a Manual J load calculation considering your specific building construction, climate, and usage patterns.