Gpm To Cfm Calculator

GPM to CFM Conversion Formula:

\[ CFM = GPM \times 0.13368055555554628 \]

Cubic Feet Per Minute (CFM):

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1. What is GPM to CFM Conversion?

GPM (Gallons Per Minute) to CFM (Cubic Feet Per Minute) conversion is used to convert liquid flow rate to gas flow rate measurements. This conversion is essential in various engineering and HVAC applications where different fluid types need to be compared or converted.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

\[ CFM = GPM \times 0.13368055555554628 \]

Where:

\( GPM \) — Gallons per minute (liquid flow rate)
\( CFM \) — Cubic feet per minute (gas flow rate)
\( 0.13368055555554628 \) — Conversion factor (1 gallon = 0.13368055555554628 cubic feet)

Explanation: The conversion factor is derived from the relationship between gallons and cubic feet, where 1 US gallon equals approximately 0.13368 cubic feet.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is crucial for HVAC system design, hydraulic calculations, pump sizing, and comparing performance across different fluid systems. It ensures proper system design and efficiency.

4. Using the Calculator

Tips: Enter the flow rate in gallons per minute (GPM). The value must be positive. The calculator will automatically compute the equivalent flow rate in cubic feet per minute (CFM).

5. Frequently Asked Questions (FAQ)

Q1: Why convert GPM to CFM?
A: Conversion is necessary when comparing liquid and gas flow rates, designing systems that handle both phases, or when specifications require different units of measurement.

Q2: Is the conversion factor exact?
A: The factor 0.13368055555554628 is precise for US gallons. Different gallon definitions (imperial) would require different conversion factors.

Q3: When is this conversion most commonly used?
A: Commonly used in HVAC systems, hydraulic engineering, pump and compressor sizing, and industrial process design.

Q4: Can CFM be converted back to GPM?
A: Yes, using the inverse formula: \( GPM = CFM \div 0.13368055555554628 \) or \( GPM = CFM \times 7.48051948 \).

Q5: Are there limitations to this conversion?
A: This conversion only handles volume flow rate. For mass flow rate conversions, fluid density must be considered as gases are compressible.