Pipe Sizer - Water Pipe Sizing vs Pipe Sizer - Water Usage & Stats
PipeSizer helps you quickly choose the right pipe diameter for water systems — for both pressure and gravity flow.
PRESSURE PIPE SIZING
• Size pipes from a target flow rate.
• Set your maximum friction rate and velocity limits.
• Calculations based on the Hazen-Williams equation.
GRAVITY PIPE SIZING
• Size pipes from a target flow rate.
• Evaluate flow capacity and velocity under gravity conditions.
• Calculations based on the Manning equation.
KEY FEATURES
• Automatic recommended pipe size based on your limits.
• Multiple pipe materials with built-in coefficients (more added over time).
• Works in both SI and Imperial (I-P) units.
• Designed for engineers, plumbers, and irrigation/drainage design workflows.
Feedback is welcome — it directly shapes upcoming updates.
- Apple App Store
- Paid
- Utilities
Store Rank
- -
The Pipe Sizer App for iOS has been designed to help water piping system engineers and designers quickly and accurately design new piping systems, and analyze existing pipping systems.
Quickly size new and analyze existing piping systems on your iPhone or iPad.
• Enter flow, friction rate or velocity numbers directly for maximum accuracy.
• Use the sliders for quick calculations.
• Calculations update live, giving you quick feedback on your design.
• Lock flow rate, friction rate or velocity to size the pipe based on your input criteria.
• Works for both SI and IP units.
• Supports steel, copper and PVC piping.
• Includes fluid data for:
• Water
• Ethylene glycol (10-90% by volume)
• Propylene glycol (10-90% by volume)
Put your plastic sizing wheel in the drawer. Have a modern design tool with you wherever you go.
Note:
This application (App) is provided for use by qualified piping system engineers and designers and is not a substitute for appropriate design services. When in doubt, contact a design professional.
- Apple App Store
- Paid
- Productivity
Store Rank
- -
Pipe Sizer - Water Pipe Sizing VS. 
Pipe Sizer - WaterFebruary 17, 2026