Pressure Drop Calculator
Pressure Drop
Calculate pressure loss in piping systems due to friction based on pipe dimensions and flow rate
feet
inches
GPM
Formula
Pressure Drop = Friction Factor x (Length/Diameter) x (Velocity squared) / (2 x g) x Density / 144
Frequently Asked Questions
What causes pressure drop in pipes?
Pressure drop is caused by friction between the fluid and pipe walls, pipe fittings, valves, and changes in pipe diameter or direction.
How do I reduce pressure drop?
Increase pipe diameter, reduce pipe length, minimize fittings and bends, and use smoother pipe materials like PVC or copper.
You may also need
A
Pipe Flow Calculator
Free pipe flow rate calculator. Calculate flow rate from pipe diameter and flow velocity. Q = A × v. Results in GPM, liters per minute, and more.
ScienceA
Reynolds Number Calculator
Free Reynolds number calculator. Compute Re = ρvD/μ and classify flow as laminar, transitional, or turbulent.
Science