How much alcohol for 100 guests?
A complete drink plan for a 100-guest wedding: 5 hours, average crowd, full bar, 15% non-drinkers, 10% buffer — computed with the standard caterer's formula.
One hundred guests is the classic wedding size, and the worked example most caterers quote. If you only read one plan, read this one.
| Item | Buy | Based on | Est. cost |
|---|---|---|---|
| Beer | 164 cans/bottles | 7 × case of 24 | $287 |
| Wine | 33 × 750 ml bottles | 5 glasses per bottle (164 glasses) | $462 |
| Spirits | 9 × 750 ml bottles | ~17 drinks per bottle (140 drinks) | $198 |
| Champagne (toast) | 17 × 750 ml bottles | 1 glass per guest, 6 per bottle | $272 |
| Soft drinks | 113 servings | 15 non-drinkers × 5 h × 1.5 | — |
| Ice | ~100 lb | ~1 lb per guest | — |
| Estimated alcohol budget (default prices) | $1,219 | ||
How this number is built
Total drinks = 100 guests × 5 hours × 1.0 drinks/hour × (1 − 0.15 non-drinkers) × 1.10 buffer = 467.5, so about 468 drinks. The full-bar split sends 35% to beer (164 units, bought as 7 cases of 24), 35% to wine (33 bottles at 5 glasses each) and 30% to spirits (9 bottles at ~17 drinks each). Champagne is separate: one toast glass for every guest, 17 bottles at 6 glasses each.
Different hours, crowd or bar style? Run your own numbers on the wedding drink calculator. Other sizes: 50 · 100 · 150 · 200 guests.
Please drink responsibly. Keep water visible all night and confirm quantities with your venue or caterer — they have the final call.
Frequently asked questions
How much alcohol do I need for 100 guests?
Using the standard formula — 100 guests × 5 hours × 1 drink/hour × 85% drinking × 1.10 buffer — plan for about 468 drinks: 164 beers, 33 bottles of wine and 9 bottles of spirits, plus 17 bottles of champagne for the toast.
How much does alcohol for 100 guests cost?
At this calculator's editable default prices (wine $14/bottle, beer $1.75 each, spirits $22/bottle, champagne $16/bottle) the estimate is about $1,219 for a full bar. Beer-and-wine only, bulk buying and retailer returns can all bring that down.
What if my reception is longer or shorter than 5 hours?
Drinks scale almost linearly with time. Add or remove about 20% of the total per hour — or just rerun the main calculator with your real hours.