AIEngineeringTool

Pipe Flow Velocity Calculator

Calculate average fluid velocity from volumetric flow and inside diameter.

Volumetric flow rate: 18 m³/h
Live concept view — geometry scales with the entered design condition.

Calculate average fluid velocity from volumetric flow and inside diameter.

Design inputs

Enter known values using the units shown. Results and the live SVG view update immediately.

PRELIMINARY RESULT

Flow area0.00503 m²

Average velocity: 0.99 m/s

Flow area
0.00503 m²
Average velocity
0.99 m/s

Calculation detail

Formula: v = Q / A

Volumetric flow is converted to m³/s and divided by the circular internal pipe area.

FORMULA VERIFICATION

Units, scope and reference

Reference: Continuity equation, Q = Av; SI unit guidance in NIST SP 811.

Internal unit basis: m³/s, m². Outputs: m², m/s.

Valid conditions: Positive flow and inside diameter; full circular pipe.

Limitations: No pressure loss, viscosity, fittings or compressibility.