Calculate how many kegs you need for your wedding reception. Compare full kegs, pony kegs, sixtels, and cases to find the best option for your crowd.
Calculate My KegsTL;DR - Quick Answer
For 100 guests at a 5-hour wedding where 40% drink beer: you need 2 full kegs (half barrels) or 3 pony kegs (quarter barrels). That covers about 200 twelve-ounce servings. Kegs save 20-40% versus buying the equivalent in cases.
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Compare keg sizes to find the right fit for your wedding
| Keg Type | Gallons | 12oz Servings | Pints (16oz) | Best For |
|---|---|---|---|---|
| Full Keg (Half Barrel) | 15.5 gal | 165 | ~124 | 100+ guest weddings |
| Pony Keg (Quarter Barrel) | 7.75 gal | 82 | ~62 | 50-100 guest weddings |
| Sixtel (1/6 Barrel) | 5.16 gal | 55 | ~41 | Variety pairings, craft beer |
| Mini Keg | 1.32 gal | 14 | - | Small gatherings, tasting |
Based on a 5-hour wedding where 40% of guests drink beer at 1 drink per hour
| Guests | Servings | Full Kegs | Pony Kegs | Sixtels | Cases |
|---|---|---|---|---|---|
| 25 | 50 | 1 | 1 | 1 | 3 |
| 50 | 100 | 1 | 2 | 2 | 5 |
| 75 | 150 | 1 | 2 | 3 | 7 |
| 100 | 200 | 2 | 3 | 4 | 9 |
| 150 | 300 | 2 | 4 | 6 | 13 |
| 200 | 400 | 3 | 5 | 8 | 17 |
These estimates assume a mixed bar with beer, wine, and cocktails available. Adjust the calculator above for your specific crowd.
Kegs are almost always more cost-effective for larger weddings. Here is how the numbers break down.
Bud Light, Coors Light, Miller Lite. Best value per serving at $0.60-$0.90 each.
Local breweries, IPAs, seasonal ales. Worth it for beer-loving crowds at $0.95-$1.50 per serving.
Heineken, Stella Artois, Guinness. Good middle ground at $0.70-$1.20 per serving.
| Format | Cost | Servings | Per Serving |
|---|---|---|---|
| Full Keg (domestic) | $100-150 | 165 | $0.60-0.90 |
| Pony Keg (domestic) | $60-90 | 82 | $0.73-1.10 |
| Case (domestic, 24-pack) | $22-30 | 24 | $0.90-1.25 |
| Case (craft, 24-pack) | $30-45 | 24 | $1.25-1.88 |
The break-even point is around 3-4 cases (72-96 beers). Once you need more than that amount of beer, a keg becomes the better value. For most weddings with 75 or more guests, kegs are the clear winner on cost. Factor in about $15-75 for tap equipment rental and $15-25 for ice per keg when calculating your total budget.
Beyond the keg itself, you need tap equipment, ice, and a place to put it all. Here is your complete logistics checklist.
Many liquor stores include free tap rental with keg purchase. Ask when ordering your kegs.
Offer complete keg setups including tubs, taps, and CO2 systems. Best for multiple kegs.
Local breweries often rent taps and jockey boxes with their keg orders. Great for craft beer.
For a typical 5-hour wedding with 100 guests where 40% drink beer, you need about 2 full-size kegs (half barrels). Each full keg holds 15.5 gallons, which is 165 twelve-ounce servings. If your crowd skews toward beer lovers, plan for 3 kegs. For smaller weddings under 75 guests, pony kegs (quarter barrels with 82 servings each) offer more flexibility.
Kegs are almost always cheaper per serving for weddings with 75 or more guests. A domestic keg costs $100 to $150 and provides 165 servings, which works out to roughly $0.60 to $0.90 per beer. Cases cost $22 to $35 for 24 beers, or about $0.90 to $1.45 per beer. The break-even point is around 3 to 4 cases worth of beer (72 to 96 servings), after which kegs become the better value.
A standard full-size keg (half barrel) holds 15.5 gallons, which equals 165 twelve-ounce servings, approximately 124 sixteen-ounce pints, or about 82 twenty-ounce imperial pints. A pony keg (quarter barrel) holds 7.75 gallons, yielding 82 twelve-ounce servings or roughly 62 pints. A sixtel (one-sixth barrel) holds 5.16 gallons, providing 55 twelve-ounce servings.
An untapped keg of pasteurized beer stays fresh for 3 to 4 months if kept refrigerated at 36 to 38 degrees Fahrenheit. Once tapped with a hand pump (party pump), beer is exposed to oxygen and stays fresh for only 12 to 24 hours. With a CO2 tap system, a tapped keg stays fresh for 6 to 8 weeks. For a wedding, tap the keg on the day of the event and plan to finish it that day if using a hand pump.
For a single-day wedding, a hand pump (party pump) works fine and is the most affordable option at $10 to $15 to rent. It uses air pressure to dispense beer. The downside is that it introduces oxygen, which makes beer go flat and stale after 12 to 24 hours. A CO2 tap system ($50 to $75 to rent) uses carbon dioxide to maintain carbonation and is better if you want leftover beer to stay fresh, or if you are serving craft beer where freshness matters more.
Plan for 40 to 60 pounds of ice per keg to keep it cold throughout the event. Place the keg in a large tub or basin and pack ice around and on top of it. You will need to replenish ice every 2 to 3 hours, especially for outdoor summer weddings. Budget about $15 to $25 in ice per keg for a 5-hour event. A good rule of thumb is to buy twice what you think you need, since ice melts faster than expected in warm weather.
Founder & Lead Event Specialist
Event planner with 12+ years in hospitality. Built Sipulus after planning 200+ weddings and seeing the same beverage mistakes.
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