Free party drink calculator. Enter guests, hours and drink mix to get exact bottles of wine, cases of beer, spirits, soft drinks and ice.
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Enter your guest count, the share who drink alcohol, and how many hours the party runs. The calculator multiplies drinking guests by hours by your drinks-per-hour pace to get total drinks, then splits them by your beer, wine and spirits mix. It converts each share into shoppable units: bottles of wine, cans and cases of beer, bottles of spirits, plus soft drinks, water and ice for everyone. These are planning estimates: every crowd drinks differently.
Every drinks calculation starts from the same rule of thumb: plan one drink per drinking guest per hour.
Total drinks = Drinking guests × Party hours × Drinks per hour
Worked example: 100 guests, all drinking, at a 4-hour party = 400 drinks. With a 40/36/24 mix: 160 beers, 144 glasses of wine (29 bottles at 5 glasses each), and 96 cocktails (6 bottles of spirits at 17 drinks each). Non-drinkers get about 1 soft drink per hour, and everyone needs water.
Count drinking guests, not just guests: kids, designated drivers and non-drinkers are excluded from the alcohol math but included for soft drinks, water and ice. Set the crowd pace: light crowds (daytime events like weddings) drink about 0.75 per hour, average parties 1 per hour, lively late-night crowds up to 1.25. Split the total across beer, wine and spirits to match your crowd. Turn on the champagne toast for weddings and toasts.
Beer usually makes up 30 to 40% of drinks at a mixed party. Divide your beer servings by 24 to get cases, and always round up: unopened cases can often be returned. For big parties, a standard 15.5-gallon keg pours about 165 twelve-ounce servings, so 3 kegs cover roughly 500 beers. Cans chill faster and avoid opener logistics; bottles feel nicer for weddings.
A 750 ml bottle of wine pours about 5 generous glasses for planning purposes. Divide your wine servings by 5 to get bottles, and round up. For 50 guests over 4 hours, that is 200 glasses or 40 bottles for a wine-only party. Split red, white and sparkling by season: more red in winter, more white and sparkling in summer and outdoors. Buying by the case is cheaper, and a few spare bottles double as hostess gifts.
A 750 ml bottle of spirits yields about 17 cocktails at a 1.5 oz pour, so divide cocktail servings by 17. Offer one or two signature cocktails instead of a full bar to keep mixer math simple. Plan about 1 soft drink per hour for non-drinkers and half a drink per hour for drinkers. Allow about 1 pound of ice per guest for drinks plus another pound per guest to chill bottles and cans, doubling in hot weather. Serve water freely: about 4 twelve-ounce glasses per guest.
Add a 10% buffer for weddings and long parties: running dry is far worse than a few leftover bottles. For a champagne toast, allow 1 bottle per 8 guests. Buy alcohol 1 to 2 weeks ahead and ice on the day. Please drink responsibly: arrange designated drivers, rideshares or a shuttle, serve food alongside alcohol, and never drink and drive.
Plan 1 drink per drinking guest per hour for an average party. Light daytime crowds drink about 0.75 per hour, lively evening crowds up to 1.25. Over 4 hours that is roughly 4 drinks per person.
For a 4-hour party at an average pace with 40% beer, about 160 beers, which is 7 cases of 24. Adjust up for beer-heavy crowds or down if most guests prefer wine.
About 40 bottles for a 4-hour wine-only event (200 glasses at 5 per bottle). For a mixed bar with 36% wine, about 15 bottles.
Divide your cocktail count by 17: one 750 ml bottle makes about 17 drinks at a 1.5 oz pour. 96 cocktails need about 6 bottles.
Multiply drinking guests by party hours by drinks per hour to get total drinks, then split by your mix. Example: 50 drinking guests × 4 hours × 1 = 200 drinks; 40% beer = 80 beers.
About 1 pound per guest for drinks plus 1 pound per guest to chill bottles and cans: 200 pounds for 100 guests, or twenty 10-pound bags. Double the drinks ice in hot weather.
Exclude them from the alcohol count but plan 1 soft drink per hour each, plus water and ice for everyone. A signature mocktail keeps non-drinkers feeling included.
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