Convert GPM to CFS Calculator by Tons of Concrete

Flow Rate Conversion Formula:

\[ Q_{cfs} = \frac{Q_{gpm}}{448.83} \]

Flow Rate (CFS): ft³/s

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1. What is a GPM to CFS Converter?

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

Purpose: It helps engineers, plumbers, and water management professionals convert between these common flow rate units.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{cfs} = \frac{Q_{gpm}}{448.83} \]

Where:

\( Q_{cfs} \) — Flow rate in cubic feet per second (ft³/s)
\( Q_{gpm} \) — Flow rate in gallons per minute (GPM)
448.83 — Conversion factor (gallons per minute to cubic feet per second)

Explanation: The conversion factor 448.83 comes from the relationship between gallons and cubic feet, and minutes to seconds.

3. Importance of Flow Rate Conversion

Details: Different industries use different flow rate units. GPM is common in plumbing, while CFS is standard in civil engineering and water resource management.

4. Using the Calculator

Tips: Simply enter the flow rate in gallons per minute (GPM). The calculator will automatically compute the equivalent in cubic feet per second (CFS).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 448.83?
A: It's derived from 1 cubic foot = 7.48052 gallons and 1 minute = 60 seconds (7.48052 × 60 ≈ 448.83).

Q2: When would I need to convert GPM to CFS?
A: When working with water systems where different units are used (e.g., pipe specs in GPM but system requirements in CFS).

Q3: How precise is this conversion?
A: Very precise - the conversion factor is accurate to 6 decimal places (448.831168).

Q4: Can I convert CFS back to GPM?
A: Yes, multiply CFS by 448.83 to get GPM.

Q5: What's a typical GPM value for household plumbing?
A: Showers typically use 2.5 GPM, faucets 1.5-2.2 GPM, and toilets 1.6-3.0 GPM.