Flow Rate Conversion Relationship

The flow rate in cubic feet per second (ft³/s, also known as CFS) can be converted from gallons per minute (GPM) using the following formula:

ft³/s = GPM × 0.00222800926

Flow Rate Input:

Flow rate measures the volume of fluid passing through a point per unit time. Common units include:

• GPM (Gallons per Minute): Widely used in the US for water flow.
• GPH (Gallons per Hour): For slower flow systems.
• GPD (Gallons per Day): Common in water usage calculations.
• L/min (Liters per Minute): Metric unit for medium flows.
• L/s (Liters per Second): Metric unit for high flows.
• L/h (Liters per Hour): Metric unit for low flows.
• m³/h (Cubic Meters per Hour): Used in industrial applications.
• m³/s (Cubic Meters per Second): For large-scale flows.
• ft³/s (CFS): Common in hydrology and river flow analysis.
• CFM (Cubic Feet per Minute): Used in HVAC and gas flow systems.

Practical Applications

This converter is useful in various contexts:

• Hydrology: Convert GPM from pumps to ft³/s for stream or river flow analysis.
• Irrigation: Standardize flow rates between imperial and metric units.
• Engineering: Compare pump outputs in ft³/s with HVAC requirements in CFM.

Example Calculation

If the flow rate is 500 GPM, the conversion to ft³/s would be:

ft³/s = 500 × 0.00222800926 = 1.1140 ft³/s

Similarly:

• GPH = 1.1140 × 448.8311688 ≈ 500 GPH
• L/min = 1.1140 × 28.316846592 × 60 ≈ 1892.7066 L/min
• m³/h = 1.1140 × 101.940648 ≈ 113.5619 m³/h
• CFM = 1.1140 × 60 ≈ 66.8400 CFM

Conversion Constants

Key conversion factors:

• 1 Gallon = 0.1336805556 ft³
• 1 ft³ = 28.316846592 Liters
• 1 ft³ = 0.028316846592 m³
• 1 minute = 60 seconds
• 1 day = 1440 minutes = 86400 seconds

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