How much beer do I need for 100 guests?

You need 25 cases of beer for 100 guests at a labor day party. This provides 512 total servings with a 15% buffer to ensure you don't run out.

How much beer per person for a labor day party?

Plan for 5.1 servings of beer per person at a labor day party. This accounts for the fact that not everyone drinks alcohol and consumption naturally slows as the event progresses.

How many servings are in a case of beer?

One case of beer contains 24 servings. For 100 guests, you'll need 25 cases to provide 512 total servings.

What percentage of guests will drink beer at a labor day party?

At a labor day party with 100 guests, approximately 70 guests (70%) will actively drink. Our formula accounts for this when calculating the 25 cases you need.

Should I buy extra beer as a buffer?

Yes! Our calculation of 25 cases already includes a 15% buffer (3 extra cases). This ensures you won't run out even if some guests drink more than average. It's always better to have leftovers than to run short.

How long will 25 cases of beer last for 100 guests?

25 cases of beer will last approximately 5 hours for 100 guests at a labor day party. This calculation factors in the natural slowdown of consumption as the event progresses.

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How Much Beer for a 100 Guest Labor Day Party?

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cases of beer

For a 100-guest labor day party lasting 5 hours

15% buffer included

512

Total servings

5.1

Per person

Buffer cases

How We Calculated This

Our bartender-tested formula, step by step

Estimate actual drinkers

100 guests × 70% drinking rate

= 70 drinkers

At large events, about 70% of guests typically drink alcohol.

Calculate base consumption

70 drinkers × 1.5 drinks/hour × 5 hours

= 525 base drinks

Industry standard is 1.5 drinks per person per hour for a 5-hour event.

Apply consumption decay

Adjusted for drinking slowdown over time (decay factor: 3.75)

= 394 adjusted drinks

People drink faster in the first hour and slow down as the event progresses.

Apply labor day party modifier

× 1.3 (+30% for beer)

= 512 beer servings needed

Labor Day Partys typically consume 30% more beer than average.

Convert to cases

512 servings ÷ 24 servings per case

= 21.3 cases (raw)

Each case of beer provides 24 servings.

Add 15% buffer & round up

21.3 × 1.15 = 24.5, rounded up

= 25 cases

Always round up and add a buffer. Running out is worse than having leftovers!

* Why trust this formula?

Based on industry standards and refined by bartenders with 30+ years of experience. We factor in consumption decay (people drink less as events progress) and real-world drinking percentages.

📊 Quick Reference: Beer by Guest Count

Guests	Beer Needed	Total Servings
25 guests	7 cases	128 servings
50 guests	13 cases	256 servings
75 guests	19 cases	384 servings
100 guests (you)	25 cases	512 servings
150 guests	38 cases	768 servings
200 guests	50 cases	1024 servings

* All calculations include a 15% buffer. Amounts for labor day party.

Your Shopping List

Everything you need, plus essentials you might forget

🍺

Beer

The main event

cases

Don't forget these

Ice (Keep those beers cold!)

300 lbs
Coolers (2 cases per cooler)

13 coolers
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Pro Tips for Your Labor Day Party

Insider advice from experienced bartenders

💡

End of summer means people are ready to indulge one last time.

⏰

Weather can vary - have backup plans for rain.

🎯

Pool parties need drinks near the pool AND inside.

🧊

It's often slightly cooler than July - ice lasts longer.

✨

Monday holiday means people may drink a bit more than usual.

🛒 Buying Guide

Similar to 4th of July but slightly higher consumption as people celebrate the end of summer. Plan 5-6 drinks per person with heavy beer emphasis.

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