Party Drink Calculator — How Much Beer, Wine, Spirits, Punch, Soda & Ice for a Party

Multiply guests by hours by your drinking pace. The standard catering rule is 1 drink per guest per hour, so 100 guests over 5 hours need about 500 drinks. Adjust for your crowd: 0.75 per hour for light drinkers, 1.5 for heavy. Also multiply by the share of guests who actually drink alcohol — if 80 of your 100 guests drink, plan 400 drinks. The calculator's pace mode does all of this, splits it into beer, wine, spirits and cocktails, and converts everything to bottles and cases.

For 100 guests over 5 hours at the standard pace (1 drink per guest per hour, 80% drinkers): about 400 drinks — for example 160 beers (7 cases of 24), 120 glasses of wine (24 bottles of 750 ml), and 120 spirit pours (8 bottles). For 50 guests over 4 hours at 1 drink per hour with 90% drinkers: 180 drinks — 6 cases of beer equivalent, 14 wine bottles, or 6 spirit bottles depending on your mix. Add a 10% buffer so the bar never runs dry; unopened bottles can usually be returned.

Plan 1 drink per guest per hour as the standard. Light-drinking crowds (family gatherings, daytime events) run about 0.75 per hour; heavy-drinking crowds (tailgates, late-night parties) about 1.5. The first hour is usually the thirstiest — guests arrive and grab a drink — so some planners add an extra half-round for hour one. This calculator lets you pick light, standard or heavy pace, or type your own rate.

Count one 12-ounce serving per beer drink, then divide by 24 and round up. Example: 150 beer servings = 7 cases of 24. If many guests prefer beer, a keg is often cheaper and easier: a half-barrel keg holds about 124 pints. Use the keg planner to compare keg combinations against cases — it also factors in the ice you will need to keep a keg cold (about 40 lb per keg tub).

First estimate beer servings: 100 guests x 5 hours x 1 drink per hour x 50% beer drinkers = 250 pints. Keg sizes: a half-barrel holds about 124 pints, a quarter-barrel about 62, and a sixth-barrel (sixtel) about 41. So 250 pints = 2 half-barrels (248 pints) or 1 half + 2 sixths (206 pints, with less waste if your crowd is mixed). The keg planner finds the minimum-waste combination automatically and compares the cost against buying cases.

A 750 ml wine bottle pours about 5 standard 5-ounce glasses (4 glasses in the UK, where the bottle is 700 ml and the standard glass is 175 ml). So if your plan calls for 120 glasses of wine, buy 24 bottles. Rule of thumb: for a mixed crowd, wine is usually 25-40% of all drinks. Always round bottles up — you cannot serve a partial bottle.

At a standard 1.5-ounce pour, a 750 ml bottle yields about 16 drinks (in the UK, a 700 ml bottle at 25 ml pours yields 28). So 80 spirit drinks need 5 bottles of 750 ml. If you are serving cocktails, enter your recipe's spirit amount per drink in the punch/cocktail scaler instead — mixed drinks often use less spirit per serving than a straight pour.

Plan about 2 eight-ounce cups per guest for punch, so 50 guests = 100 servings = about 6.25 gallons (roughly 24 liters). Enter your bowl size and the calculator scales your recipe: for example, a 2-gallon bowl needs 4 batches for 120 servings. It also computes chilling ice (about 1 lb per gallon of punch) and tells you how many 2-liter bottles to buy if your recipe uses soda.

Budget roughly 1 lb of ice per guest for a 4-5 hour party, split between serving and chilling — that is the short answer to how much ice per person a party needs. The ice planner breaks it down: about 0.5 lb per guest for drinks served (62.5 lb for 100 guests over 5 hours), plus chilling ice — 1 lb per 6-pack of beer or soda, 1 lb per 4 wine or spirit bottles, 40 lb per keg tub, and 1 lb per gallon of punch. A 100-guest party with 7 cases of beer and 32 wine bottles lands around 107 lb, or six 20-lb bags.

Plan about 0.75 non-alcoholic servings per guest per hour — everyone drinks water between alcoholic drinks, and some guests skip alcohol entirely. For 100 guests over 5 hours that is 375 servings. A common split: 40% soda (150 cans = 7 cases), 30% juice or mocktails (about 27 liters = 14 two-liter bottles), 30% water (113 half-liter bottles). The soft-drink planner computes all three from your guest count and hours.

The math is the same, but the pace and mix change. Tailgates skew heavy on beer at about 1.5 drinks per hour; cocktail parties skew toward spirits and mixed drinks at the standard 1 per hour; a kids' birthday party is mostly non-alcoholic (raise the soft-drink rate); BBQs and graduation parties sit in the middle. The calculator's party-type presets set a sensible pace, drinker share and mix for each — then you can fine-tune.

Multiply each bottle or case by its local price. Example: 24 wine bottles at $12, 7 beer cases at $22 and 8 spirit bottles at $25 = $642, or about $6.42 per guest for 100 guests. Enter your real prices in the cost estimator — it pulls your quantities in automatically, adds punch supplies, soda, water and ice, and shows the total plus cost per guest. The single biggest saver is shifting the mix toward beer and punch instead of spirits.

Usually yes for 100+ beer drinkers, but do the math: a half-barrel (124 pints) typically replaces about 5 cases of 24. Enter your local keg prices and case price in the keg planner and it compares directly — for example, a $180 half-barrel plus a $90 sixth-barrel ($270) versus 7 cases at $22 ($154) means cases win in that market. Do not forget the keg extras: a $30-60 deposit, a tap rental, and about 40 lb of ice.

Yes. Bottle and pour sizes differ by region: the UK uses 700 ml spirit and wine bottles (vs 750 ml in the US, Canada and Australia), the UK standard spirit measure is 25 ml (vs 1.5 oz in the US), and the UK wine glass is 175 ml. Select your region and every servings-per-bottle figure updates — for example, 112 spirit servings need 5 bottles of 700 ml in the UK versus 7 bottles of 750 ml in the US.

A standard punch bowl holds 1-2 gallons (16-32 eight-ounce servings). To scale: divide total servings by servings per bowl to get batches, then multiply every ingredient by the exact batch count. The punch scaler shows both the exact scaled amounts (e.g. 3.75x) and the rounded-up shopping quantities (4x) so you buy enough without guessing. Tip: freeze some punch into an ice ring instead of adding plain ice — it chills without diluting.

Use our wedding drink calculator — it is built for weddings, with champagne toasts, open bar vs limited bar modes, signature-cocktail scaling for receptions, and multi-region bottle sizes. This party drink lab is for non-wedding events: birthdays, BBQs, tailgates, graduations, cocktail parties and holidays.