Pipe Flow Rate Calculator
The Pipe Flow Rate Calculator helps you determine the flow rate of liquid through a pipe based on its diameter and flow velocity. This tool is essential for engineers, plumbers, and anyone working with fluid systems.
- Enter the pipe diameter in inches
- Enter the flow velocity in feet per second (ft/s)
- Click the "Calculate" button to get the flow rate in gallons per minute (GPM)
The flow rate is calculated using the following formula:
Flow Rate (GPM) = Pipe Area (square inches) × Flow Velocity (ft/s) × Conversion Factor
Where:
- Pipe Area = π × (Diameter)² / 4
- Conversion Factor = 37.303 (to convert from cubic inches per second to gallons per minute)
For a pipe with:
- Diameter: 4 inches
- Flow Velocity: 5 ft/s
The calculation would be:
- Area = 3.1416 × (4)² / 4 = 12.5664 square inches
- Flow Rate = 12.5664 × 5 × 37.303 = 2,347.6 GPM
Proper flow rate calculations are crucial for:
- Designing efficient plumbing systems
- Ensuring adequate water supply for fixtures
- Preventing pipe erosion from excessive flow velocities
- Maintaining optimal pressure in fluid systems
- Complying with building codes and regulations
This calculator is useful for:
- Residential plumbing design
- Commercial water system planning
- Irrigation system design
- Industrial fluid transport systems
- HVAC system design