How much alcohol do I need for a wedding?
There is no single universal quantity. A practical estimate depends on how many guests are expected to drink, how long the bar is available, and whether the venue serves beer, wine, cocktails, or a mix. This calculator deliberately uses a modest planning assumption rather than an aggressive consumption rate.
How the calculator works
The model starts with 0.75 alcoholic servings per drinking guest per event hour. A limited bar uses 80% of that base. The total is then divided into the selected beverage mix. When water and non-alcoholic service is selected, the tool separately plans 2 non-alcoholic servings per guest per hour.
Methodology
| Input or rule | Tool assumption |
|---|---|
| Base alcohol rate | 0.75 serving / drinking guest / hour |
| Limited bar | 80% of base estimate |
| Balanced mix | 40% beer · 35% wine · 25% cocktails |
| Beer-heavy | 55% beer · 30% wine · 15% cocktails |
| Wine-heavy | 25% beer · 55% wine · 20% cocktails |
| Cocktail-heavy | 20% beer · 25% wine · 55% cocktails |
| Non-alcoholic service | 2 servings / guest / hour |
Examples
50 guests
At 70% drinking guests, 5 hours, and limited service, the model produces about 105 alcoholic servings before the beverage mix is applied.
100 guests
Under the same assumptions, the estimate is about 210 alcoholic servings.
200 guests
Under the same assumptions, the estimate is about 420 alcoholic servings.
Responsible planning
Keep water and appealing non-alcoholic choices visible and easy to reach. Follow the caterer or venue's service rules, legal requirements, and any package limits. The calculator estimates purchasing or service needs; it does not tell individual guests how much to drink.
Common mistakes
- Counting every invited guest as an alcohol consumer.
- Forgetting water and non-alcoholic service.
- Ignoring the actual container or serving sizes used by the caterer.
- Using a planning estimate as a recommendation for personal intake.
FAQs
How much alcohol do I need for a wedding?
Estimate drinking guests, service duration, and beverage mix, then verify the result with your caterer.
How much beer and wine should I buy for a wedding?
Start with total estimated servings and convert them using the actual serving sizes your venue uses.
How many drinks per person should I plan?
This tool uses an event-level purchasing assumption, not a recommendation for an individual's drinking.
Should water be included in the bar plan?
Yes. Water should be readily available whether alcohol is served or not.
Does open bar change the quantity?
It can change service and purchasing needs, but the tool does not use open-bar status to encourage higher consumption.