Gas Service Line Sizing Calculator Sizes residential and commercial gas service lines using Weymouth and Spitzglass formulas. Calculates required pipe diameter, pressure drop, velocity, equivalent length for fittings, and capacity at design conditions.
Pressure Conditions
psig
psi
Typical: 0.5 in WC (LP) to 5 psi (HP)
BTU/hr
Pipe Properties
feet
-
feet
Positive = uphill from main to customer
Learn the Theory
Service line sizing methods, Weymouth and Spitzglass equations, fitting equivalent lengths