Calculate Velocity from Flow Rate

Velocity Formula:

\[ V = \frac{Q}{A \times 448.83} \]

Velocity (V): ft/s

Definition: This calculator determines the fluid velocity based on flow rate and cross-sectional area.

Purpose: It helps engineers and technicians calculate how fast fluid is moving through a pipe or channel.

The calculator uses the formula:

\[ V = \frac{Q}{A \times 448.83} \]

Where:

Explanation: The flow rate is converted from GPM to ft³/s and then divided by the cross-sectional area to get velocity.

Details: Proper velocity calculation ensures efficient system design, prevents pipe erosion, and maintains optimal flow conditions.

Tips: Enter the flow rate in GPM and cross-sectional area in square feet. Both values must be > 0.

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

Q2: What's a typical velocity range for water in pipes?
A: Generally 2-8 ft/s, with 4-6 ft/s being most common for optimal flow.

Q3: How do I calculate cross-sectional area?
A: For circular pipes: A = π × (diameter/2)². Convert diameter to feet if needed.

Q4: Can I use this for other fluids?
A: Yes, but the conversion factor remains the same as it's based on volume flow rate.

Q5: What if I have flow rate in different units?
A: Convert to GPM first or adjust the conversion factor accordingly.