Cocktail Party Calculator
Estimate liquor, wine and beer for your party, then calculate mixer bottles from your chosen cocktail recipe.
Estimate My InventoryEstimate Cocktail Party Inventory
Defaults: 50 guests, 3 hours, no assumed non-drinkers, and a Cocktail Crowd profile. The buffer starts off. Change the inputs to match your guest list and menu.
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How much mixer for your cocktail party?
Start with the planned servings of one cocktail and its measured mixer pour. This worksheet works for tonic, soda or juice without assuming you need the same quantity of every mixer.
Include only guests you are planning this recipe for.
For this recipe only, not the entire bar.
90ml is an example. Enter the measured amount from your recipe.
2000ml = 2 litres; use the size on the product label.
Applied once, before rounding to full bottles.
60 cocktails need 5.4L of this mixer: buy 3 × 2000ml bottles.
This is separate from the alcohol inventory above. Repeat for each mixer, or scale every ingredient together. Do not count a mixer again in the soft-drink allowance unless it will also be served on its own.
Mixer example for 15, 30 and 50 guests
Two cocktails per guest, each using 90ml of one mixer, with no extra stock buffer. Replace those example assumptions with your recipe.
| Guests | Cocktails | Mixer | 2L bottles |
|---|---|---|---|
| 15 | 30 | 2.7L | 2 |
| 30 | 60 | 5.4L | 3 |
| 50 | 100 | 9L | 5 |
For soda served on its own and water for everyone, use the soda and water calculator. For a multi-ingredient recipe, use the batch cocktail calculator.
Default Calculator Assumptions
How the Estimate Works
1. Count Active Drinkers
Enter the guest list and exclude the percentage who will not drink alcohol.
2. Set Party Duration
The model reserves 2 servings in hour one and 1 in each later hour.
3. Round to Packages
The selected profile becomes beer cases, wine bottles, and liquor bottles.
Cocktail Party Quick Reference
Three-hour Cocktail Crowd inventory with no assumed non-drinkers or buffer
| Guests | Base servings | Beer | Wine bottles | Liquor bottles |
|---|---|---|---|---|
| 25 | 100 | 20 beers (1 cases) | 4 | 4 |
| 50 | 200 | 40 beers (2 cases) | 8 | 8 |
| 75 | 300 | 60 beers (3 cases) | 12 | 11 |
| 100 | 400 | 80 beers (4 cases) | 16 | 15 |
Category and package rounding can create more packaged capacity than the base serving estimate. Recipe ingredients, mixers, garnishes, and ice are not included.
Turn Bottle Inventory Into a Cocktail Menu
Scale Recipes
Use measured pours and the recipe's stated yield. Deduct every spirit in a multi-spirit drink from the relevant bottle allocation.
Keep Alternatives Visible
Offer wine, beer, water, and appealing alcohol-free choices alongside the cocktail menu so guests can choose freely.
Confirm Service Details
Check venue rules, chilling capacity, glassware, staffing, transportation, and local alcohol requirements before buying.
Frequently Asked Questions
How many mixers do I need for a party of 15 people?
For an example of two cocktails per guest, each using 90ml of one mixer, 15 guests need 2.7 litres: buy two 2-litre bottles of that mixer before any extra stock buffer. Replace the 90ml pour with your actual recipe, and calculate each mixer separately.
How many two-litre soda bottles for 30 people?
For 30 guests having two cocktails each with 90ml of soda, the recipe needs 5.4 litres, so buy three 2-litre bottles. That covers this cocktail mixer only. Soda served on its own needs a separate allowance based on the overall drink mix.
How much alcohol do I need for a cocktail party of 30 guests?
For 30 guests, 3 hours, no assumed non-drinkers, a Cocktail Crowd profile, and no buffer, the calculator reserves 120 servings: 24 beers (1 case), 5 wine bottles, and 5 liquor bottles. This is an inventory estimate, not a recommendation for how much guests should consume.
What does the default cocktail party example produce?
The default is 50 guests for 3 hours, with no assumed non-drinkers, a 20% beer, 20% wine, and 60% liquor Cocktail Crowd split, and the optional buffer switched off. It produces 200 base inventory servings, packaged as 2 beer cases, 8 wine bottles, and 8 liquor bottles.
How does the cocktail party calculator work?
It reserves 2 servings per active drinking guest for the first hour and 1 for each later hour. It applies the chosen drink mix, rounds each category up, and converts it using 24 beers per case, 5 wine servings per bottle, and 17 liquor servings per 750ml bottle.
Does one liquor bottle always make 17 finished cocktails?
No. The calculator conversion is based on 17 standard 1.5oz liquor servings from a 750ml bottle. A finished cocktail may use a different pour or more than one spirit, so scale every recipe from its measured ingredients and stated yield.
Are mixers, garnishes, and ice included?
The inventory calculator covers beer, wine and liquor. The separate mixer calculator below scales one measured mixer from your recipe into litres and bottles. Use the batch cocktail tool for multiple ingredients; garnishes and ice are still separate.
How should I budget for a cocktail party?
Price the calculated packages with current local quotes, then add the exact recipes, ice, alcohol-free drinks, service, delivery, tax, and venue fees that apply to your event. Product choices and local prices vary too much for one universal party budget.
Ready to plan your cocktail party?
Adjust the defaults to build an inventory estimate for your menu and guest list.
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