1. What is GPM to CFM Conversion?

GPM (Gallons Per Minute) to CFM (Cubic Feet Per Minute) conversion is used to convert liquid flow rates to gas flow rates, particularly important in HVAC systems, pneumatic applications, and fluid dynamics calculations.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( CFM \) — Cubic Feet per Minute (ft³/min)
• \( GPM \) — Gallons per Minute (gal/min)
• \( 7.4805 \) — Conversion factor (gallons per cubic foot)
• \( 60 \) — Conversion factor (minutes to seconds)

Explanation: This formula converts liquid flow rate (GPM) to gas flow rate (CFM) using standard conversion factors.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is crucial for designing ventilation systems, calculating air requirements for pneumatic tools, and ensuring proper system performance in various engineering applications.

4. Using the Calculator

Tips: Enter GPM value in gallons per minute. The value must be greater than 0 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 7.4805 used?
A: 7.4805 is the number of gallons in one cubic foot, which is the standard conversion factor between volume measurements.

Q2: Can this conversion be used for all fluids?
A: This conversion is specifically for volume flow rate and assumes standard conditions. For different fluids with varying densities, additional factors may be needed.

Q3: What are typical GPM to CFM values in HVAC systems?
A: HVAC systems typically require 400 CFM per ton of cooling capacity, which translates to specific GPM requirements based on the conversion formula.

Q4: How accurate is this conversion?
A: The conversion is mathematically precise for volume flow rate conversion under standard conditions.

Q5: When should I use this conversion?
A: Use this conversion when you need to convert liquid flow rates (GPM) to gas flow rates (CFM) for system design, equipment selection, or performance calculations.