Beer Glass Volume Converter
13 illustrated beer glasses scaled to their true volume, 27 brewing units, and country presets from a Bavarian Maß to a craft sixtel.
Quick Conversion
Formula: mL = oz × 29.5735
All 27 beer-volume units
From clay tankards to craft sixtels: a brief history of the beer glass
Beer is the world's oldest commercial beverage and its glassware tells the story of empire, trade, and local taste. The Sumerian beer hymn to Ninkasi, dating to about 1800 BCE, describes drinking from communal vessels through reed straws. By the Middle Ages, English alehouses served ale in leather tankards (jacks) of one pint - a measure already enshrined in the Magna Carta of 1215 as a standard for "London ale."
The modern divergence between US and UK pints traces to 1824, when the British Weights and Measures Act redefined the imperial pint as one-eighth of an imperial gallon (10 lb of water at 62 °F = 568.26 mL). The young United States kept the pre-1824 Queen Anne wine gallon and divided it into 16 US fluid ounces, producing the 473.18 mL US pint. The 95 mL difference is roughly two extra mouthfuls of beer - a non-trivial gap that continues to startle American tourists at British pubs.
Germany's Maß (pronounced "mahss") is a one-litre stoneware or glass mug indelibly linked to Oktoberfest. The size predates German unification: Bavaria has served beer in Maßkrüge since the 1500s. Compounded by the 1516 Reinheitsgebot (purity law restricting beer to water, barley, hops, later yeast) and a brewing tradition emphasising lager and Helles, the Maß became cultural shorthand for Bavarian identity. Modern Oktoberfest serves 6-7 million Maß per year.
Australia complicates the picture with a regional vocabulary that varies state by state. NSW and the ACT call a 285 mL pour a "middy"; in Western Australia the same volume is also a middy but elsewhere it's a "pot." The 425 mL schooner is the standard pour in NSW and QLD, but a schooner in South Australia is 285 mL - the same size other states call a middy. Knowing which state's schooner you are ordering matters in Australia in the same way knowing which country's pint you are pouring matters internationally.
The growler is an American invention. The name dates to the 1880s when patrons would carry a tin pail of draft beer home from the tavern; the lid's rattling as carbon dioxide escaped (or perhaps the drinker's mood) produced a growl. Prohibition killed the format. The 1989 Wyoming Brewers Supply revived it in the form we know now: a 64 US fl oz (1893 mL) glass jug, half-gallon size, perfect for one person's weekend supply of fresh craft beer.
The craft beer revolution that followed reshaped the US keg market. The traditional US half-barrel (1/2 bbl) keg holds 15.5 US gallons (58.7 L) and weighs about 160 lb full - too much for a small bar to rotate when offering 20 taps of small-batch beer. The sixtel keg (1/6 bbl, 5.16 US gal, 19.55 L) emerged in the late 1990s as the craft-friendly format: weight under 50 lb, fits a homebrew chest freezer, exactly two cases of pints per keg. Today most US craft breweries package primarily in sixtels.
Belgian glassware is its own discipline. Each beer style has a designated glass: the tulip for IPAs and strong ales, the chalice for Trappist beers, the snifter for high-ABV barleywines, the stange for Kölsch. The tradition is not pretension - the bowl shape, lip angle, and capacity are calibrated to the beer's carbonation, head retention, and aromatic profile. This converter packs the headline styles into a visual library so you can match volume to vessel as well as taste.
Trusted by brewmasters, publicans, beer judges, and bar owners
“Settling arguments about US versus UK pint pours used to take a calculator and a calm head. The visual schooner-pint-Maß comparison side-by-side is brilliant for our export sales team explaining keg yields to American importers.”
“When a tourist asks "how big is your half pint?" I now turn the tablet around and show them. Same for the AU schooner question we get from rugby fans. The compare mode is the killer feature.”
“Pour size affects style judging more than people realise. Having every glass in one widget with calibrated volumes - including the snifter and tulip for Belgian strong ales - is the cleanest reference I have ever bookmarked. Pinned to my judging laptop.”
“The price-per-pint to price-per-litre conversion is exactly what I use when comparing sixtel cost from different breweries. Pours per keg projections in one click. This tool quietly improved my margin tracking.”
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