Trying to figure out how much alcohol to buy for your big day? What you need is a Wedding Alcohol Calculator. Whether you’re planning a backyard bash or an elegant reception, getting your drink quantities right is essential. And let’s be honest—no one wants to run out of bubbly halfway through the speeches.
That’s where this guide comes in. It’s more than just advice—it’s your ultimate wedding alcohol calculator, including beer, wine, cocktails, cider, ginger beer, water, and non-alcoholic drinks. Whether you’re after a free wedding alcohol calculator, want to know the alcohol cost for a wedding, or are just after tips on how to calculate alcohol for a wedding, you’re in the right place.
Let’s break it down.
🧮 How Do You Calculate Alcohol for a Wedding?
First up, the golden rule:
Guests will typically drink between 1 to 2 standard drinks per hour.
So, for a 5-hour reception with 100 guests, you’re looking at 500 to 1000 total drinks, depending on your crowd.
A typical breakdown is:
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50% Beer
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20% Wine
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20% Cocktails
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10% Non-Alcoholic
This method is used by many popular online tools but here at Kombi Keg, we like to add a little extra flavour.
🍻 Know Your Crowd: Not All Wedding Guests Drink the Same
One-size-fits-all doesn’t work when it comes to alcohol planning. That’s why the best wedding alcohol calculators (like this one!) remind you to think about:
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- Who’s coming?
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- How long is your reception?
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- What’s the weather like?
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- How many people are likely to drive?
For example, a younger crowd or hospitality crew might drink more than average, while a family-friendly daytime event could lean lighter.
✅ Always include:
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- A light beer option for designated drivers or those pacing themselves
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- Non-alcoholic drinks and mocktails so everyone feels included
Use our guide as a wedding alcohol calculator per person, and adjust based on your unique celebration.
🍻 How Many Kegs Do I Need? (Beer, Cocktails, Cider, Ginger Beer & Water)
Kegs are the perfect way to serve drinks efficiently, stylishly, and sustainably at your wedding—and Kombi Keg makes it even easier. With six icy-cold taps on board, you can pour a variety of beverages to suit all your guests.
Standard Keg Sizes:
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- 49.5L keg = approx. 116 standard serves (425ml each)
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- 30L keg = approx. 70serves (less common, ideal for variety)
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- 20L keg = approx. 47serves (offered by select craft breweries and for cocktails and wine)
💡 Most popular mainstream beers that you find at your local bar—like Carlton Draught, Great Northern, Hahn, or VB—are typically only available in 49.5L kegs, so plan accordingly if you’re selecting commercial brands.
✅ What Can You Pour From a Keg?
You’re not just limited to beer! Kombi Keg allows you to serve a wide range of drinks:
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- 🍺 Beer – Classic lagers, craft brews, mid-strengths, and light beer
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- 🍏 Cider – Apple or pear ciders are refreshing crowd favourites
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- 🫂 Alcoholic Ginger Beer – A zingy and increasingly popular option for modern weddings
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- 🍷 Wine – White and rosé wines pour perfectly chilled from a keg
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- 🍹 Cocktails – Espresso Martinis, Mojitos, Aperol Spritz, Margaritas and more
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- 🧃 Kombucha – A bubbly, gut-friendly alternative that fits any vibe
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- 🥤 Mocktails – Delicious and inclusive options for non-drinkers
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- 💧 Water – An absolute must-have on any bar menu
💧 Why Water is Non-Negotiable
Water is essential—full stop. Whether guests are drinking alcohol or not, staying hydrated is key to a safe and enjoyable celebration. Kombi Keg can dedicate one tap (or more) to chilled still or sparkling water. You can also offer:
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- Infused water jugs (with citrus, cucumber, or berries)
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- Bottled water in ice tubs or from a spare tap on the Kombi Keg
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- Sparkling water on tap as a refreshing mixer or standalone option
For outdoor weddings or summer receptions, consider planning for at least 1.5 cups of water per guest per hour, especially if alcohol is flowing freely.
🍺 Sample Tap Line-Up
If you’re unsure how to split your six taps, here’s a tried-and-true combo that works across weddings of all sizes:
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- Lager, Classic Beer or Craft Beer
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- Mid-strength or Light Beer
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- Alcoholic Ginger Beer
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- Signature Cocktail (pre-batched)
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- Mocktail
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- Chilled Still or Sparkling Water
This lineup gives your guests a well-balanced mix of alcoholic and non-alcoholic options, while also keeping the experience smooth and stylish.
Example Wedding Alcohol Calculator by Guest Count:
| Guests | Total Drinks | Beer 49.5L Keg | Beer 49.5L Keg | Cocktails (20%) | Cocktail 20L Kegs | Wine | Wine Bottles |
|---|---|---|---|---|---|---|---|
| 50 | 250 | 100 | 2 x 49.5L | 50 | 2 x 20L | 50 | 10 |
| 75 | 375 | 150 | 3 x 49.5L | 75 | 2 x 20L | 75 | 15 |
| 100 | 500 | 200 | 3 x 49.5L | 100 | 3 x 30L | 100 | 20 |
| 150 | 750 | 300 | 4 x 49.5L | 150 | 4 x 30L | 150 | 30 |
| 200 | 1000 | 400 | 5 x 49.5L | 200 | 5 x 30L | 200 | 40 |
Use this table as your go-to alcohol calculator for wedding receptions. You can even turn it into your own wedding alcohol calculator spreadsheet.
🍸 Cocktail Options: Handcrafted or On Tap?
Want to wow your guests? Serve cocktails from the Kombi Keg! Choose from handcrafted classics or pre-batched cocktails poured straight from the tap. They’re fun, quick to serve, and customisable.
Try these from our Top 12 Wedding Cocktails article:
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- Espresso Martini
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- Mojito
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- Aperol Spritz
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- Margarita
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- Gin & Elderflower Fizz
Each cocktail keg (20L) can serve 100–150 drinks, depending on the recipe and the strength.
🥤 Non-Alcoholic Drink Calculator for Weddings
Planning for guests who aren’t drinking? Great!
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- Offer mocktails on tap, like Virgin Mojitos, Lychee Fizz, or Kombucha
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- Include plenty of water stations, soda, and juice
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- Kombi Keg can also pour non-alcoholic options from the taps
Use a non-alcoholic drink calculator for weddings to ensure you have:
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- 1–2 drinks per non-drinking guest per hour
💡 Why Kombi Keg Makes It Easy
We’re more than a mobile bar—we’re your wedding alcohol planning calculator on wheels! When you hire Kombi Keg:
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- We’ll help you calculate exactly how many kegs you need
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- We provide commercial and craft keg compatibility
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- We offer beer, cocktail, mocktail, and wine solutions
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- Optional extras
And it all comes in a beautifully restored vintage Kombi van 💛
✅ Final Wedding Alcohol Calculator Tips
Whether you’re using The Knot calculator or this Kombi Keg guide, remember:
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- Overestimate slightly to avoid running out
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- Cater for all types of guests—drinkers and non-drinkers
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- Use a mix of full and smaller kegs for flexibility
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- Offer a variety of beverages including light beer, cider, ginger beer, mocktails and water
📅 Book Kombi Keg for Your Wedding
Looking for the best wedding alcohol calculator and a bar that delivers? t’s not a wedding without Kombi Keg!