Pressure Loss Calculator

Use this pressure loss calculator to estimate friction losses in plumbing systems.

Related Calculators

Pipe Flow Calculator | Pipe Volume Calculator | Water Pressure Calculator

How to Use

Enter pipe diameter, length, and flow rate. Select pipe material. Click Calculate to estimate pressure loss.

Example

For a 1-inch pipe, 100 ft long, with 10 GPM flow using PVC:

• Velocity ≈ 4.1 ft/s
• Estimated Pressure Loss ≈ 0.25 psi

Tips

• Larger diameter = much lower friction loss
• Longer pipes increase total loss
• Smooth materials like PVC reduce resistance

Frequently Asked Questions

What increases pressure loss the most?
High flow rate and small diameter.

How do I reduce it?
Use larger pipes or shorter runs.