Beer Line Length Calculator

How It Works

Beer line length is the primary way to balance a draft system. The formula is simple: Line Length = (Serving PSI - Height Loss - Faucet Loss) / Line Resistance per Foot. Standard 3/16" vinyl tubing provides 2.2 PSI resistance per foot and works for most home kegerators with 4-8 feet of line. Going too short causes foamy pours because excess pressure blasts CO2 out of solution at the faucet. Going too long causes slow pours. When in doubt, err on the longer side — you can always cut tubing shorter, but you cannot make it longer. Keep beer lines cold from keg to faucet to prevent warm spots that cause foaming.