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Pipe Velocity Calculator | System Design Checks - Quickly Find Fluid Velocity

Pipe Velocity Calculator

Determine the velocity of a fluid (e.g., water) in a pipe based on the flow rate and the internal pipe diameter.

The Velocity Formula

The velocity of a fluid in a pipe is a measure of how fast it is moving. It is a fundamental calculation in hydraulics and is essential for preventing issues like water hammer (if velocity is too high) or sediment buildup (if velocity is too low).

The formula is: Velocity = 0.4085 × Flow Rate (GPM) / (Inner Diameter)². This formula directly converts Gallons Per Minute and diameter in inches to a velocity in Feet Per Second.

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