Flow Rate to CFM by Tons of Concrete

Flow Rate Conversion Formula:

\[ Q_{cfm} = Q_{gpm} \times 7.481 \]

Flow Rate (CFM):

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1. What is a Flow Rate to CFM Calculator?

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

Purpose: It helps engineers, HVAC professionals, and fluid system designers convert between these common flow rate units.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{cfm} = Q_{gpm} \times 7.481 \]

Where:

\( Q_{cfm} \) — Flow rate in cubic feet per minute
\( Q_{gpm} \) — 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 Flow Rate Conversion

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

4. Using the Calculator

Tips: Simply enter the flow rate in gallons per minute (GPM). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 7.481 the conversion factor?
A: There are exactly 7.48052 gallons in one cubic foot (rounded to 7.481 for practical calculations).

Q2: When would I need to convert GPM to CFM?
A: Common in HVAC systems, hydraulic calculations, and when comparing equipment specifications that use different units.

Q3: Does temperature affect the conversion?
A: The volume conversion is constant, but fluid density changes with temperature may affect mass flow rates.

Q4: Can I convert CFM back to GPM?
A: Yes, divide CFM by 7.481 to get GPM.

Q5: Is this conversion valid for all fluids?
A: Yes, for volume flow rates. For mass flow rates, you would need to consider fluid density.