Party Drinks Calculator — How Much to Buy

A practical rule is about 1 standard drink per guest per hour at a moderate profile. For 20 guests and a 5-hour party that is about 100 drinks: roughly 50 beer bottles (0.5 L), 5 wine bottles and 2 vodka bottles. The calculator splits the alcohol 50% beer, 25% wine, 25% vodka.

The profile sets how many drinks each guest has per hour. Light (0.7) is a gathering focused on conversation. Medium (1.0) is a typical social party. Strong (1.3) is a stag night or New Year, where people drink more. Pick the profile that matches your guests and occasion.

Always provide plenty of water and soft drinks. Some guests do not drink, are driving, or simply want to hydrate between drinks. The calculator estimates about 0.3 litres of drinks per guest per hour. Access to water reduces dehydration and helps avoid a hangover.

Allow about 0.5–1 kg of ice per guest if you serve drinks on ice or chill drinks in tubs. Ice melts faster on hot days and at long parties, so buy extra. Some will chill beer and wine, and some goes into the drinks themselves.

Plan at least 1.5–2 vessels per guest, because people set down and lose glasses during a party. Universal wine glasses plus tumblers for soft drinks and beer are convenient. For outdoor or very large parties, consider disposable cups, ideally recyclable.

The default split of 50% beer, 25% wine, 25% vodka suits a typical party. If you know your guests, adjust: a barbecue usually needs more beer, an elegant dinner more wine, and a dance party more vodka. The calculator gives a starting point.

It is better to buy a little too much than too little — unopened bottles of beer, wine and vodka keep for a long time and come in handy later. Most shops accept returns of unopened, undamaged packaging. Buying with a small surplus is a sensible strategy.

Provide food throughout the party, as it slows alcohol absorption, plus constant access to water. Never pressure anyone to drink and offer alternatives for non-drinkers. People who are driving should not drink — arrange accommodation or transport for guests.

No. In Poland the limit is 0.2 per mille, and even a small amount of alcohol can exceed it while impairing concentration and reaction time. The safest rule is zero alcohol before driving. Arrange transport, accommodation, or a designated sober driver.

No. The calculator gives indicative amounts based on average assumptions and a typical drink split. Actual consumption depends on the guests, weather and occasion. Treat the result as a starting point for your shopping list and adjust it to your group.