CFM to Tons Calculator
Convert CFM to tons of refrigeration. Bidirectional HVAC calculator for air conditioning system sizing and design.
Essential for HVAC technicians, contractors, and homeowners. Converts airflow to cooling capacity using industry-standard formulas.
HVAC Cooling Calculator
Cooling Capacity Results
Enter airflow and temperature values to calculate cooling capacity
CFM to Tons Calculator
In HVAC systems, airflow and cooling capacity work together, but they are not the same thing. CFM (Cubic Feet per Minute) measures how much air moves through a system, while tons of refrigeration describe how much heat that system can remove. A CFM to Tons Calculator helps connect these two values using proven HVAC formulas.
Formula Used in the Calculator
The calculator uses HVAC industry-standard formulas:
Example Conversion Table
Here are examples of airflow to cooling capacity conversions using different temperature differences:
| Airflow (CFM) | ΔT (°F) | Basic Method (Tons) | Engineering Method (Tons) | Application |
|---|---|---|---|---|
| 400 | 20 | 1.0 | 0.9 | Small room AC |
| 800 | 20 | 2.0 | 1.8 | Medium room unit |
| 1,200 | 25 | 3.0 | 3.4 | Large room system |
| 1,600 | 20 | 4.0 | 3.6 | Small commercial unit |
| 2,000 | 15 | 5.0 | 3.4 | Office space system |
| 2,400 | 20 | 6.0 | 5.4 | Restaurant cooling |
| 3,200 | 25 | 8.0 | 9.1 | Large commercial system |
| 350 | 15 | 0.9 | 0.6 | Small closet AC |
| 650 | 30 | 1.6 | 2.3 | Server room unit |
| 950 | 18 | 2.4 | 1.9 | Two-room system |
| 1,350 | 22 | 3.4 | 3.3 | Apartment unit |
| 1,750 | 28 | 4.4 | 5.4 | Retail store AC |
| 2,150 | 16 | 5.4 | 3.8 | Cafeteria cooling |
| 2,550 | 24 | 6.4 | 6.8 | Classroom system |
| 2,950 | 19 | 7.4 | 6.2 | Library cooling |
| 3,350 | 26 | 8.4 | 9.6 | Auditorium system |
| 450 | 12 | 1.1 | 0.6 | Bathroom exhaust |
| 750 | 14 | 1.9 | 1.2 | Kitchen hood |
| 1,050 | 17 | 2.6 | 2.0 | Conference room |
| 1,450 | 21 | 3.6 | 3.4 | Hotel room AC |
| 1,850 | 13 | 4.6 | 2.7 | Laundry facility |
| 2,250 | 23 | 5.6 | 5.8 | Gym equipment |
| 2,650 | 27 | 6.6 | 8.0 | Warehouse spot cooling |
| 3,050 | 29 | 7.6 | 9.8 | Data center cooling |
| 3,450 | 31 | 8.6 | 11.8 | Industrial process |
| 550 | 11 | 1.4 | 0.7 | Utility room |
| 850 | 16 | 2.1 | 1.5 | Home office AC |
The table above demonstrates how temperature difference affects cooling capacity calculations. Notice how the basic method (400 CFM/ton) provides a rough estimate, while the engineering method gives more accurate results based on actual temperature drops.
By combining clear inputs with accurate formulas, the CFM to Tons Calculator makes HVAC system sizing transparent and reliable in practical engineering situations.
Always measure actual temperature differences and airflow rates for precise calculations. Manufacturer specifications and local climate conditions can affect final system sizing.