Everyday Life
Party Drink Quantity Calculator
Multiply guests by drinks each, then divide by the drinks per bottle to see how many bottles you need.
Formula
Total drinks = guests x drinks per guest. Bottles = total drinks / drinks per bottle, rounded up.
How it works
Drinks per bottle depends on the drink: a 750 ml bottle gives about five 150 ml glasses, while larger bottles give more.
Always round bottles up and add a spare or two — running out of drinks ends a party faster than running out of food.
FAQs
How many glasses from a 750 ml bottle?
About five glasses at 150 ml each, or six smaller 125 ml servings.
Do I need to count water?
Yes — allow at least one bottle of water per few guests, especially at long or warm-weather parties.
What if guests drink different things?
Split the total across drink types by rough preference, and keep one option generous for the most popular choice.