🥂 Wedding Alcohol Calculator

How Much Alcohol for Your Wedding?

Weddings run on the same catering math as parties, adjusted for the occasion: 2 drinks per guest in the first hour, 1 per hour after, times the share of guests drinking. Enter your headcount, reception length, and drinking percentage; the calculator splits wine, beer, cocktails, and the champagne toast, with keg equivalents and bartender guidance.

Wedding Bar Formulas

One hundred guests, 5 hours, 80% drinking: 100 × 6 × 0.8 = 480 drinks. Beer-wine-signature split (30/50/20): 240 wine drinks = 48 bottles, 144 beers = 6 cases or nearly a half-keg, 96 cocktails = 6 liquor bottles. Champagne toast: 100 ÷ 7 ≈ 15 bottles. Bartenders: 2.

Worked Example: 100 Guests, 5 Hours

Enter 100 guests, 5 hours, 80% drinking, beer-wine-signature, toast yes. The plan: 48 bottles of wine (4 cases: 2 red, 1.5 white, 0.5 rosé or sparkling), 144 beers (6 cases, or one half-keg plus a case), 6 bottles of base spirit for the signature cocktail batched in dispensers, 15 champagne bottles for the toast, plus non-alcoholic drinks for 20 guests and 100+ pounds of ice. Two bartenders for service.

Bar Styles Compared

Beer, wine, and a signature cocktail is the modern standard: it feels generous, costs roughly half a full bar, and needs fewer bartenders. Wine-heavy suits vineyard and dinner-style weddings. A full bar impresses but doubles liquor quantities and demands 1 bartender per 50 guests pouring cocktails all night. Whatever the style, the non-alcoholic tier should be deliberate: sparkling water, sodas, and a mocktail version of the signature drink.

Practical Tips for the Wedding Bar

Buy from retailers with return policies and confirm before purchasing; overbuying is free insurance only if returns work. Chill wine and beer 48 hours ahead; there is no fixing warm cases on the day. Batch the signature cocktail the morning of, minus anything sparkling. Put the bar away from the dance floor entrance to avoid gridlock. And designate transport visibly: shuttle, rideshares, or a hotel block, announced before the first toast.

The signature cocktail batching math: for 100 guests, 1 gallon of batched cocktail serves about 20 guests one drink each, so 2 gallons covers the cocktail share with margin. Mix the base the morning of, chill in the dispenser, and add sparkling elements at service time. Label it with a cute name and the ingredients; the sign is decor and allergy information in one.

Choosing Wine for a Crowd

Crowd-pleasing wine is not the wine you love; it is the wine nobody dislikes. For reds, choose soft and fruity: Pinot Noir, Merlot, or a Spanish Rioja. For whites, go crisp and neutral: Pinot Grigio, Sauvignon Blanc, or unoaked Chardonnay. Avoid big tannic reds and oaky Chardonnays; they divide rooms. The 50/30/20 split of white/red/rosé-sparkling covers most palates.

Buy by the case for 10 to 15% discounts, and choose widely available labels so a mid-party restock run is possible. Boxed wine (3 liters, 4 bottles' worth) is the insider move for sangria or casual receptions: better value, no corks, stays fresh weeks after opening. Spend the savings on the champagne toast, where the label gets photographed. Nobody remembers the house red; everyone remembers the toast.

The champagne toast math is its own ritual: one 750 ml bottle pours 6 toast-sized 4-ounce glasses, so 100 guests need 17 bottles. Buy the toast champagne separately from the reception wine; it gets photographed, so the label matters more here than anywhere. And the send-off trick: hand the remaining open bottles to the wedding party as they leave. Nothing should go back to the caterer unopened.

Confirm the venue's corkage and outside-alcohol policy before buying a single bottle. Some venues charge per bottle opened, which can erase the savings of buying retail.

Common Mistakes to Avoid

Underbuying ice strands the whole bar: 1 pound per guest plus chilling tubs, bought the day of. Skimping on non-alcoholic options leaves a fifth of guests awkward. The third is the champagne toast trap: a third of toast pours go unfinished, so consider toasting with poured drinks. And the expensive one: no return policy on a 20% overbuy. Ask before you pay.

Worked Example: The 60-Guest Backyard Wedding

Sixty guests, 4 hours, 80 percent drinking: 48 drinkers. At roughly 3 drinks each: 144 drinks. Beer and wine split: 84 beers, a half-keg with margin, or 4 cases. Wine: 60 glasses = 12 bottles, a case of red and half the whites. One signature cocktail batched in dispensers: 3 bottles of base spirit. Toast: skip the champagne bottles and pour sparkling wine from the white allocation, saving $100 with nobody the wiser.

Non-alcoholic: 12 guests plus drinkers pacing themselves need real options, not an afterthought. Sparkling water, lemonade, and a non-alcoholic batch cocktail in its own dispenser. The bar looks generous when everyone has something good in hand.

The Ice Math Nobody Does

Catering rule of thumb: 1 to 1.5 pounds of ice per guest for chilling plus serving. One hundred guests: 100 to 150 pounds of ice, which is 5 to 8 standard 20-pound bags. Buy it the morning of: ice melts, and yesterday's bargain is today's puddle. Two tubs or coolers per bar station, one for chilling bottles, one for serving, because fishing drink ice from bottle-chill water is a hygiene fail.

The forgotten line item is water: one bottle per guest minimum, more in summer. Dehydrated guests drink faster, which is not the kind of bar efficiency anyone wants. Water is the cheapest item on the alcohol plan and the one most often forgotten.

The Consumption Curve Over the Night

Drinking is not evenly spread across five hours. The first hour runs hot, about 1.5 drinks per guest, as people arrive thirsty. Hours two through four settle to about one per guest per hour with food in play. The last hour drops to half a drink as people wind down or leave. For 100 guests over 5 hours: 150 + 300 + 50 = 500 drinks, not the 600 that flat math suggests. This curve is why bars run dry at 9 PM at badly planned weddings: the buyer used the average, but the crowd drank the peak first. Buy to the curve, keep 10 percent in reserve, and the bar survives the night.

Worked Example: The 60-Guest Backyard Wedding, 4 Hours

Sixty guests, 4 hours, beer and wine only. Drinks needed: hour one 90, hours two and three 120, hour four 30, total 240, plus 10 percent buffer is 264. Split 50/50 beer to wine: 132 beers is about five and a half 24-packs, buy 6. Wine: 132 glasses at 5 glasses a bottle is 27 bottles, buy a case of red (12), a case of white (12), and 3 extra white for the heat. Ice: 1 pound per guest for drinks plus 1 pound per guest for chilling, 120 pounds total, bought the morning of. Total alcohol cost at retail: roughly $400 to $550, against a $2,000-plus bar package. The DIY bar is the highest-ROI decision in wedding budgeting, and the math above is the whole plan.

Bar Mistakes

Mistake one is the full open bar for a beer-and-wine crowd; spirits triple the cost and the chaos, and most guests never miss them. Mistake two is fancy glassware rentals at $1-plus per glass when sturdy disposables cost cents and nobody photographs the cups. Mistake three is no water plan. A water station cuts consumption, cuts hangovers, and costs almost nothing; skipping it is the most expensive saving on this page. Hydrated guests stay longer and behave better, which is the point of the party.