Guide to Beer Bottle - Keg - Barrel Capacities

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Average Bottle / Crown Cap = 12 ounces / 22 ounces

Balthazar = 12 litres or 3.17 gallons

Barrel = 31.5 U.S. gallons or 1.17 hectolitres. In the UK, 1 Barrel holds 36 imperial gallons or 1.63 hectolitres

Beer Bottle with Cork and Cage = 750 ml (750 ml bottle serves approximately three 8-ounce glasses of beer)

Grolsch Bottle = 22 oz. or 650 ml / 50 oz. or 1.5 litres / 169 oz. or 5 litres

Jeroboam = 3 litres or 3/4 gallon

Keg = a half-barrel or approximately 15 U.S. gallons and weighs about 136 pounds ("Real-life" experiments translate that to about one-hundred-forty-two 12-cup servings)

Import Keg = 13.2 gallons of beer

Magnum = 1.5 litres

Methuselah = 6 litres or 1.58 gallons

Middle or Pot = 10 ounces

Nebuchadnezzar = 15 litres or 3.96 gallons

Pony or Quarter-barrel Keg = 7.75 gallons

Rehoboam = 4.5 litres or 1.188 gallons

Salmanazar = 9 litres or 2.37 gallons

Schooner = 15 ounces

Sixth-barrel Keg = ~5 gallons

Stubbie = ~12 ounces, but is shorter and fatter than the typical American beer bottle