1. What is an Air Flow Rate Unit Converter?

Definition: This calculator converts air flow rate from gallons per minute (GPM) to cubic feet per minute (CFM).

Purpose: It helps HVAC professionals, engineers, and technicians convert between different units of air flow measurement.

2. How Does the Converter Work?

The converter uses the formula:

Where:

• \( Q_{cfm} \) — Air flow rate in cubic feet per minute
• \( Q_{gpm} \) — Air flow rate in gallons per minute
• 7.481 — Conversion factor (gallons per cubic foot)

Explanation: Since there are 7.481 gallons in one cubic foot, multiplying GPM by this factor converts to CFM.

3. Importance of Air Flow Rate Conversion

Details: Proper unit conversion ensures accurate system design, performance calculations, and equipment selection in HVAC and ventilation systems.

4. Using the Converter

Tips: Enter the flow rate in gallons per minute (GPM). The converter will automatically calculate the equivalent in cubic feet per minute (CFM).

5. Frequently Asked Questions (FAQ)

Q1: Why convert between GPM and CFM?
A: Different industries and applications use different units, and conversion is often needed for system design and specification.

Q2: Is the conversion factor always 7.481?
A: Yes, this is a constant based on the definition of gallons and cubic feet in US customary units.

Q3: When would I need to make this conversion?
A: When working with specifications that use different units, or when integrating components that use different measurement systems.

Q4: Does this conversion work for liquids too?
A: Yes, the same conversion factor applies to any fluid flow rate, though CFM is typically used for gases.

Q5: How precise is this conversion?
A: The conversion is mathematically exact, though practical measurements may have instrument precision limitations.