Plumbing & Water Systems
Flow Rate & Velocity Checker
Enter a pipe inside diameter, then either a flow rate or a target velocity — the other is calculated from Q = V × A.
Velocity
0.46 m/s
Flow rate
60 L/min
Flow rate
3.6 m³/hr
General guidance — domestic cold water ~1.0–2.0 m/s, hot water ~0.5–1.5 m/s. Confirm against project specification, not a fixed code requirement.
Reference data — verify against manufacturer datasheet for critical/high-pressure applications.