Flow Rate Conversion Relationship

The flow rate in liters per second (LPS or L/s) can be converted from gallons per minute (GPM) using the following formula:

LPS = GPM × 0.0630901964

Flow Rate Input:

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

• GPM (Gallons per Minute): Standard in the US for water flow.
• GPH (Gallons per Hour): Used for slower flows.
• GPD (Gallons per Day): Common in daily water usage.
• L/min (Liters per Minute): Metric unit for medium flows.
• L/s (LPS, 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 settings.
• m³/s (Cubic Meters per Second): For large-scale flows.
• CFM (Cubic Feet per Minute): Common in HVAC systems.

Practical Applications

This converter is useful in various scenarios:

• Plumbing: Convert GPM from US systems to LPS for metric compatibility.
• Irrigation: Standardize flow rates for sprinkler systems.
• Engineering: Compare pump outputs between imperial and metric units.

Example Calculation

If the flow rate is 50 GPM, the conversion to LPS would be:

LPS = 50 × 0.0630901964 = 3.1545 L/s

Similarly:

• GPH = 3.1545 × 15.850323141 ≈ 50 GPH
• L/min = 3.1545 × 60 ≈ 189.2700 L/min
• m³/h = 3.1545 × 3.6 ≈ 11.3562 m³/h
• CFM = 3.1545 ÷ 0.4719474432 ≈ 6.6840 CFM

Conversion Constants

Key conversion factors:

• 1 Gallon = 3.785411784 Liters
• 1 m³ = 1000 Liters
• 1 ft³ = 28.316846592 Liters
• 1 minute = 60 seconds
• 1 hour = 3600 seconds
• 1 day = 1440 minutes

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