Pipe Size Calculator
Estimate a pipe diameter from flow, pressure and length.
About this tool
Results use the stated material, temperature and pressure-drop assumptions. Suggested sizes refer to internal diameter; verify the pipe maker’s actual internal diameter and fittings.
Copy your technical summary and paste it into your own email if needed. Supplier browsing uses the product category only.
Frequently asked questions
Can I continue if I do not know a parameter?
Yes. Leave it blank or choose Not sure. The requirement remains available for a supplier to confirm; the tool does not invent a value.
Does this select a specific brand or model?
No. The result is a preliminary specification. Manufacturer links use public product categories; each supplier must confirm performance for your actual conditions.