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Kegerator and draft setup tool

Beer line calculator for kegerators and draft systems

Estimate draft line or kegerator tubing length from serving pressure, faucet height, a standard faucet allowance, and beer tubing restriction.

Step 1

Enter your draft setup

Use the serving pressure, faucet height, and beer line type you plan to run. The closer these match your real kegerator or keezer, the more useful the starting length will be.

Use the pressure you plan to serve at, not a temporary burst-carbonation pressure.
Measure from the center of the keg to the faucet. Use a negative number if the faucet is below the keg.
SoCal Super Flexible presets use our tubing specs. For other brands, use the tubing maker's restriction rating.
Draft setup tip For most home kegerators, 3/16 inch beer line is the easiest place to start because it gives short runs enough restriction for a controlled pour.
This updates when you choose a tubing type. Higher resistance usually means a shorter beer line; lower resistance usually means a longer run.

How to use the result

Beer line restriction controls how much pressure is lost before beer reaches the faucet. This calculator starts with your serving pressure, subtracts vertical lift and a standard 1 PSI faucet allowance, then divides the remaining pressure by the tubing resistance.

Cutting draft line too short is hard to undo. Start a little longer than the result, test the pour with the keg cold and settled, then trim in small steps only if the beer pours too slowly.

If the beer is warm, overcarbonated, or pushing through dirty draft parts, line length alone will not fix the pour. Check temperature, carbonation pressure, faucet cleanliness, and restriction together before changing hardware.

Next step

Build the line this calculator recommends

Once you have a target length, choose tubing and hardware that fit the pour you want. For most short kegerator beer lines, 3/16 inch tubing is the practical starting point because it adds enough restriction without requiring a long coil of line.

Why beer line length changes foam and pour speed

Too little beer line resistance can make a keg pour fast, foamy, or inconsistent because too much pressure reaches the faucet. Too much restriction can make the pour slow and frustrating. A useful draft line length gives the beer enough restriction for the serving pressure, faucet height, and tubing size you actually use.

If a beer is already overcarbonated or too warm, longer beer tubing alone will not fix the problem. Start with the keg carbonation calculator to choose a serving pressure that matches the beer temperature and carbonation target, then use this beer line calculator to estimate the line length for that pressure.

How to tune this draft line calculator result

  1. Start with the recommended starting length for the tubing you are actually using.
  2. Keep the keg cold and let the beer settle at the serving pressure.
  3. Clean the faucet and beer line before blaming the balance calculation.
  4. If the pour is too fast or foamy, add line or lower serving pressure only if carbonation allows it.
  5. If the pour is too slow, shorten the line in small steps rather than cutting aggressively.

Different tubing brands, flow-control faucets, towers, beer temperature, and long warm shanks can change the real-world pour. Treat this kegerator tubing calculator as a setup tool, then adjust based on your system.

Common beer line setup questions

What beer line length do I need for a kegerator?

Most short home kegerator builds start with 3/16 inch beer line because it adds enough restriction without needing an unusually long run. Use the calculator result as a starting point, then cut the line a little long so you can test and trim after the keg is cold and pouring.

Should I use 3/16 inch or 1/4 inch beer line?

For short beverage lines inside a kegerator or keezer, 3/16 inch line is usually easier to balance. 1/4 inch line has lower restriction, so it can require a much longer beer run at the same pressure. If you are building a compact home draft setup, start by comparing the calculator result with our beer line and draft tubing hardware.

Why is my keg still pouring foamy?

Foam is not always a line-length problem. Warm beer, overcarbonation, dirty faucets, warm towers, bad seals, or pressure that does not match the beer temperature can all cause trouble. If pressure is the question, use the keg carbonation calculator first, then come back here to size the beer line.

What should I buy after calculating the line length?

Start with the tubing that matches the result, then check the rest of the draft path: draft tubing and hardware, CO2 regulators, draft cleaning supplies, and kegging equipment.