Here are a few guides to help you decide how much to buy for your next party. You can enter the number of guests, the total hours, and the beverages you plan on serving during your next event. You may select all three (beer, wine, spirits) if needed. The results provided will give you the most accurate estimate possible.

BeerA 12-pack of beer (12 ounces per bottle or can) will serve around four to six people with an average of two to three beers per guest in a two-hour period.

One bottle (approximately .750ml) provides roughly 20 to 24 drinks.
Always make sure you have enough beverages on hand to supply your guests. Since most parties average a span of 2 to 4 hours you should plan on each guest having at least three or four drinks for the first two hours. This should help in deciding how much to buy for your next event.