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Pipe Sizing Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Formel

Min Diameter = √(4Q / π × V) where Q=flow, V=max velocity

Trin-for-trin guide

  1. 1Determine required flow rate, select acceptable velocity, solve for diameter
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Løste eksempler

Input
50 GPM flow, 6 fps max velocity
Resultat
D = √(4×0.111/(π×6)) = 0.154 ft = 1.85 inches → use 2 inch

Almindelige fejl at undgå

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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