Pipe Velocity Calculator
Calculate the flow velocity in a pipe based on flow rate and pipe diameter. Useful for plumbing, HVAC, and fluid dynamics.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator computes the velocity of fluid flowing through a pipe using the formula v = Q / A, where Q is the flow rate and A is the pipe’s cross-sectional area.
- Enter the Flow Rate (Q) – Choose the unit (m³/s, L/min, or GPM) and type a positive number.
- Enter the Pipe Diameter (D) – Choose the unit (m, mm, or in) and type a positive number.
- Click “Calculate” – The velocity in meters per second (m/s) appears instantly, along with step-by-step conversion details.
Tips:
- All inputs must be positive numbers. Negative or zero values trigger an error.
- You can press Enter after typing either value to calculate quickly.
- The calculator automatically converts units to meters and m³/s before computing.
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Frequently Asked Questions
Pipe velocity is the speed at which fluid flows through a pipe, calculated as flow rate divided by cross-sectional area.
Proper velocity ensures efficient flow and prevents issues like erosion, noise, and pressure drop. Typical velocities range from 1-3 m/s for water.
Select the appropriate unit from the dropdowns. The calculator automatically converts to SI units for calculation.