Volume Flow Rate Calculation Formula

Volume Flow Rate Formula:

\[ Q = V \times A \times 448.83 \]

Volume Flow Rate (Q): GPM

Definition: This calculator determines the volumetric flow rate in gallons per minute (GPM) based on fluid velocity and cross-sectional area.

Purpose: It helps engineers and technicians calculate fluid flow rates in pipes, channels, and other systems.

The calculator uses the formula:

\[ Q = V \times A \times 448.83 \]

Where:

Explanation: The velocity and area are multiplied to get cubic feet per second, then converted to GPM.

Details: Accurate flow rate calculations are essential for system design, pump sizing, and ensuring proper fluid transport in piping systems.

Tips: Enter the fluid velocity in ft/s and cross-sectional area in ft². All values must be > 0.

Q1: What is the 448.83 conversion factor?
A: It converts cubic feet per second to gallons per minute (1 ft³/s = 448.83 GPM).

Q2: How do I measure velocity in a pipe?
A: Use flow meters or calculate from pressure differentials using Bernoulli's equation.

Q3: What if my area is in inches?
A: Convert to square feet first (divide square inches by 144).

Q4: Does this work for any fluid?
A: Yes, but the velocity must be in ft/s and area in ft² regardless of fluid type.

Q5: What's a typical velocity for water in pipes?
A: Typically 4-8 ft/s for water in supply lines, but varies by application.