Equivalent Length of Pipe Calculator

Units: f and K are unit-less. D and L_eq have the same units. For instance: If D is in meters, then L_eq is in meters. If D is in inches, then L_eq is in inches. If D is in ft, then L_eq is in ft.

Equivalent length equation: L_eq = K D / f

If rectangular duct, compute D from: D = 4 A / P

where A=Area of duct and P=Perimeter of duct. Equations from references listed at Discussion and References for Closed Conduit Flow.

LMNO Engineering, Research, and Software, Ltd.
7860 Angel Ridge Rd. Athens, Ohio 45701 USA Phone: (740) 707-2614
LMNO@LMNOeng.com https://www.LMNOeng.com


Solve for:	Pipe Diameter, D:
	Moody Friction Factor, f:
	Minor Loss Coefficient, K:
www.LMNOeng.com	Equivalent Length, L_eq:
© LMNO Engineering, Research, and Software, Ltd.