How Much Wine for a 20-Guest Wedding?
If wine is the only alcohol you serve 25 bottles (5.4 glasses per guest)
Seven lines of arithmetic
Change any assumption you disagree with; the answer follows.
| Estimate actual drinkers | 20 guests × 80% drinking rate | 16 drinkers |
| Calculate base consumption | 16 drinkers × 1.5 drinks/hour × 5 hours | 120 base drinks |
| Apply consumption decay | Adjusted for drinking slowdown over time (decay factor: 3.75) | 90 adjusted drinks |
| Apply wedding modifier | × 1.2 (+20% for wine) | 108 wine servings if served alone |
| Share of the bar | 108 servings × 37.5% | 41 wine servings |
| Convert to bottles | 41 servings ÷ 5 servings per bottle | 8.2 bottles (raw) |
| Add 15% buffer & round up | 8.2 × 1.15 = 9.4, rounded up | 10 bottles |
The Knot's wedding guide plans one drink per guest per hour with a 50/25/25 liquor, beer and wine split. This model counts only the guests who drink, slows the pace after the first hour, and keeps a 15 percent margin; read the methodology.
Wine for a wedding, by guest count
| Guests | Full bar, bottles | Wine only, bottles | Servings |
|---|---|---|---|
| 25 guests | 12 bottles | 32 bottles | 51 |
| 50 guests | 22 bottles | 59 bottles | 95 |
| 75 guests | 33 bottles | 88 bottles | 143 |
| 100 guests | 41 bottles | 109 bottles | 177 |
| 150 guests | 62 bottles | 164 bottles | 266 |
| 200 guests | 76 bottles | 202 bottles | 329 |
Full bar figures are wine's share of a four-drink bar for a wedding, with a 15 percent buffer included.
What to put in the cart
A backup means one stuck cork does not stall the bar.
Two per drinker covers a refill without a trip to the sink.
32 glasses: one 48-pack
You need 10 bottles (about 1 cases)
Find it locally.
Order a few days ahead so pickup is ready when you need it.
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Wine at a wedding
How much wine do I need for 20 guests?
You need 10 bottles of wine for 20 guests at a wedding, assuming you are serving a full bar. That is 41 servings with a 15% buffer. If wine is the only alcohol you serve, plan on 25 bottles instead.
How much wine per person for a wedding?
Plan for 2.1 servings of wine per person at a wedding with a full bar. This accounts for the fact that not everyone drinks alcohol, that consumption slows as the event progresses, and that wine is only 37.5 percent of what gets poured.
How many servings are in a bottle of wine?
One bottle of wine contains 5 servings. For 20 guests, you'll need 10 bottles to provide 41 total servings.
What percentage of the bar is wine at a wedding?
About 37.5 percent of the drinks poured at a wedding are wine. With 20 guests, roughly 16 will be drinking, and that share works out to 10 bottles.
Should I buy extra wine as a buffer?
Our figure of 10 bottles already includes a 15% buffer (1 extra bottles). That covers guests who drink more than average. It is always better to have leftovers than to run short.
How long will 10 bottles of wine last for 20 guests?
10 bottles of wine will last approximately 5 hours for 20 guests at a wedding, alongside the other drinks on the bar. This factors in the natural slowdown of consumption as the event progresses.