Skip to content
Calculator Collection

Pipe Flow Rate Calculator vs Pipe Flow Velocity Calculator

Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.

Civil

Pipe Flow Rate Calculator

Determine the flow rate of water through a pipe using the Hazen-Williams equation. Use this when designing or analyzing water distribution systems, irrigation lines, or municipal supply networks.

Answers
Flow Rate (gpm)
Inputs
Pipe Diameter, Total Head Loss, Hazen-Williams C Factor, Pipe Length
Civil

Pipe Flow Velocity Calculator

Calculates the average flow velocity of fluid in a circular pipe given a volumetric flow rate and pipe diameter. Use it when sizing pumps, checking design velocities, or troubleshooting pipe systems.

Answers
Flow Velocity (m/s)
Inputs
Flow Rate, Pipe Diameter

At a glance

Pipe Flow Rate CalculatorPipe Flow Velocity Calculator
CategoryCivilCivil
AnswersFlow RateFlow Velocity
Inputs42
Result unitgpmm/s

When to use each

Determine the flow rate of water through a pipe using the Hazen-Williams equation. Use this when designing or analyzing water distribution systems, irrigation lines, or municipal supply networks.

Calculates the average flow velocity of fluid in a circular pipe given a volumetric flow rate and pipe diameter. Use it when sizing pumps, checking design velocities, or troubleshooting pipe systems.

Compare page seeded from editorial siblings — both calculators list each other as related.