Wedding Alcohol Calculator

A commonly cited planning estimate is about one drink per guest per hour. For 100 guests over a 5-hour reception, that's roughly 500 total drinks before splitting across beer, wine, and spirits, plus a buffer of about 10 to 15 percent. This is a planning guideline, not a guarantee — actual consumption varies with guest demographics, time of day, and whether a full bar or limited selection is offered, so use the wedding alcohol calculator above with your own guest count and hours for a closer estimate.

Sources vary: one common starting split is roughly 40 to 50 percent beer, 35 to 40 percent wine, and 15 to 20 percent spirits, while another frequently cited version runs closer to 50 percent liquor with beer and wine splitting the rest evenly. Neither is more "correct" than the other — what matters is your own guests' known preferences. This calculator lets you set your own percentages rather than assuming one fixed split fits every event.

A 750ml bottle is generally figured at about five 5-ounce glasses for wedding planning purposes. If wine is set at roughly 35 to 40 percent of a 500-drink total (100 guests, 5 hours, 1 drink per hour), that's about 175 to 200 wine servings, or roughly 35 to 40 bottles. Enter your own guest count, hours, and wine share above for an exact figure rather than scaling this example.

Figure beer as its share of your total estimated drinks, then convert to cases of 24 cans or bottles. At a common 40 to 50 percent beer share of a 600-drink total (120 guests, 5 hours), that works out to roughly 10 to 12.5 cases. Heavier beer-drinking crowds, daytime events, or a beer-focused menu can justify pushing that share higher.

A standard 750ml spirits bottle poured at the typical 1.5-ounce shot yields roughly 16 servings. If spirits make up 15 to 20 percent of your total estimated drinks, divide that portion by 16 to get bottles needed. Mixed drinks and heavier pours reduce servings per bottle, so an open bar with a lot of cocktails will need more bottles than straight shots alone would suggest.

One drink per guest per hour is the most commonly cited baseline, and it's the default this calculator uses. Some caterers instead front-load consumption, planning two drinks in the first hour when everyone gets a drink at once, then one per hour after — which lands close to the same total over a typical multi-hour reception. Use the higher rate if your crowd skews younger, it's an evening or Saturday event, or you know from past events that your group drinks more than average.

Estimates vary, but roughly 10 to 20 percent of wedding guests typically don't drink, and some UK survey data puts alcohol-free guests as high as a quarter of the room. Enter the number of guests actually expected to drink into the calculator rather than your full headcount, subtracting children, designated drivers, and known non-drinkers, and plan a real non-alcoholic drink option for everyone else.

Yes — a buffer of roughly 10 to 15 percent on top of the calculated total is the convention most US bartenders and venues work from, covering spills, uneven consumption across tables, and guests who have one more than average. This calculator's output is the baseline estimate; add that percentage yourself when you place the order, and lean toward the higher end if running short mid-reception would be hard to fix quickly.

Many liquor retailers accept returns on unopened, unchilled bottles and cases, which is exactly why overbuying by 10 to 15 percent is low-risk compared to running out. Return policies vary by store and by state — some regions have stricter alcohol laws that limit returns — so confirm your specific retailer's policy before the event, not after.

Roughly, yes, since total drinks scale with hours in the standard formula, but consumption isn't perfectly flat across an entire event. The first hour or two, especially a cocktail hour, tends to run heavier than the later hours once dinner and dancing slow the pace. A very long reception (7 to 8 hours) usually needs less than a straight linear scale-up of a shorter one, since guests don't sustain the opening pace for the whole night.

A 750ml champagne or sparkling wine bottle typically pours about six 4-ounce toast glasses. For a toast-only pour (not full glasses of champagne throughout the reception), figure roughly one bottle per six guests, plus a few extra bottles as a buffer since toast bottles are often opened and poured all at once with little room to adjust mid-pour.

Buying alcohol directly and either self-serving or hiring an independent bartender is usually cheaper per drink than a venue's or caterer's bar package, but it shifts the buffer-and-shortage risk onto you and may not be allowed at every venue. Venue and catering bar packages cost more per drink but remove that planning risk. Check your venue's alcohol policy before assuming you can supply your own — some require licensed service even if you provide the bottles.

Outside of wedding planning, the "1-2-3 rule" most often refers to a personal moderation guideline (popularized in a U.S. Coast Guard safety context): no more than one standard drink per hour, no more than two per occasion, and no more than three in a day. It isn't a wedding-specific buying formula, so it won't tell you how many bottles to order. If you saw this phrase in a wedding-planning context, it's most likely being confused with the front-loaded consumption pattern — two drinks in the first hour, one per hour after — covered in the guide above and used by this calculator's optional adjustments.

There's no single standardized "2-2-2 rule" in wedding-planning sources — it's not a term any major venue, caterer, or wedding site defines consistently. What several planning guides do describe under similar-sounding names is a front-loaded pace: roughly two drinks per guest in the first hour, when everyone gets a drink in hand at once, then one drink per guest for each hour after that. Over a typical 4 to 5 hour reception, that front-loaded pattern lands close to the flat one-drink-per-hour total this calculator uses by default, so treat any "2-2-2" figure you've seen as a rough restatement of that same first-hour bump rather than a separate rule to apply on top.

Skip the beer/wine/spirits math entirely and apply the same guest-count-times-hours logic to non-alcoholic drinks instead: a real mocktail menu (not just one pitcher of lemonade), sparkling water, soda, and sparkling cider poured for toasts in place of champagne. Roughly 10 to 20 percent of guests at any wedding don't drink regardless of the couple's own choice, so a well-stocked non-alcoholic bar is worth planning properly even at a wedding that does serve alcohol. Guests generally don't miss alcohol as much as hosts expect, especially when the alternatives are treated as a genuine bar program rather than an afterthought.