Gallons Per Minute To Cfm Conversion

Conversion Formula:

\[ CFM = GPM \times 0.13368055555554628 \]

Cubic Feet Per Minute (CFM):

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1. What is GPM to CFM Conversion?

GPM to CFM conversion is used to convert flow rates from gallons per minute to cubic feet per minute. This conversion is essential in various engineering and fluid dynamics applications where different units of flow measurement are required.

2. How Does the Conversion Work?

The conversion uses the formula:

\[ CFM = GPM \times 0.13368055555554628 \]

Where:

\( CFM \) — Cubic feet per minute
\( GPM \) — Gallons per minute
\( 0.13368055555554628 \) — 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 in HVAC systems, plumbing design, industrial processes, and hydraulic engineering where different measurement units are used across regions and applications.

4. Using the Calculator

Tips: Enter the flow rate in gallons per minute (GPM). The value must be non-negative. The calculator will instantly convert it to cubic feet per minute (CFM).

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between GPM and CFM?
A: GPM measures liquid flow rate (gallons per minute), while CFM measures gas or air flow rate (cubic feet per minute). The conversion allows comparison between different fluid types.

Q2: Is the conversion factor exact?
A: The factor 0.13368055555554628 is based on the US liquid gallon definition where 1 gallon = 231 cubic inches and 1 cubic foot = 1728 cubic inches.

Q3: When is this conversion most commonly used?
A: Commonly used in HVAC for air handling units, pump sizing, ventilation systems, and when converting between liquid and gas flow measurements.

Q4: Are there different gallon definitions that affect conversion?
A: Yes, this calculator uses US liquid gallons. Imperial gallons (UK) would require a different conversion factor (1 imperial gallon = 0.160544 cubic feet).

Q5: Can this conversion be used for any fluid?
A: The conversion is purely volumetric and works for any fluid, but density differences between liquids and gases should be considered for mass flow calculations.