Party Drinks Calculator
How many drinks to buy for a party, based on guest count and event length.
Every calculation runs locally in your browser. This is a rate-based estimate — adjust "drinks per person per hour" up or down for a thirstier or lighter crowd.
Packs to buy
4
Drinks needed
80
Drinks you'll actually have
96
16 extra
For informational and educational purposes only — not professional advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why rounding up to full packs matters
Drinks are almost always sold in fixed pack sizes, so the raw "drinks needed" number rarely lines up with what you can actually buy — this rounds up to the next full pack rather than leaving you short a few drinks partway through the event. The gap between "drinks needed" and "drinks you'll actually have" is your buffer for guests who drink more than average, plus whatever's left over to put in the fridge afterward.
Frequently asked questions
How is the number of drinks per guest estimated?
Using a standard planning rate of roughly one drink per guest per hour, adjusted for event length — a common starting assumption for a typical social gathering, though it varies with the crowd and occasion.
Should I buy exactly what this calculator says?
Round up rather than down — running out is a worse outcome than having a little extra, and most drinks (unopened bottles, canned beverages) keep fine if you overestimate slightly.