Party Bar Math

Ice & garnish calculator

40 guests.6 bags of ice.

Bags of ice for drinks and coolers, and how much citrus and herbs to buy.

See the list

Ice

Garnish

How many drinks get each garnish. 10% spare is added.

Squeezing your own juice?

The batch calculator tells you how much juice a recipe needs.

The ice order

6

bags of ice

Planning a wedding?

Our Wedding Bar Calculator + Planner does the bar order, shopping list with your store's prices, budget and guest list in one place. A Holiday Party Bar Planner is coming soon.

How much ice do you need for a party?

Ice is the thing parties run out of first, and it's the cheapest thing to over-buy. The usual planning range is 1 to 2 lb per guest: about 1 lb for a cool indoor party, 1.5 lb for a typical party, and 2 lb when it's hot, outdoors or by a pool. That's for a party of up to about 4 hours. A longer one scales up, so a 6-hour party needs one and a half times as much.

Chilling cans and bottles is extra. A cooler or tub of drinks needs its own ice, roughly 20 lb for a standard 48-quart cooler, on top of the ice that goes into glasses. A wet ice bath (ice plus water) chills cans much faster than ice alone.

Worked example

40 guests, a typical 4-hour party: 40 × 1.5 lb = 60 lb, six 10 lb bags. Add two tubs of beer and that's another 40 lb, so 10 bags.

Ice rules from behind the bar

  • Keep glass ice and chilling ice separate. Ice that has held cans and bottles doesn't go in drinks.
  • Buy the ice last, or have it delivered. Store spare bags in a cooler in the shade, not on the floor.
  • Use a scoop, never a glass. A chipped glass in the ice bin means emptying the whole bin.
  • Punch bowls get one big block or ring, frozen the day before, so the punch doesn't water down.

Garnish math

  • A lime cuts into 8 wedges. A lemon gives about 6 good wheels. An orange gives about 6 wide peels.
  • For juice, plan on about 1 oz per lime and 1.5 oz per lemon.
  • Cut citrus the day of and keep it covered with a damp paper towel in the fridge until guests arrive.
  • A bunch of rosemary or mint gives about 10 good sprigs once you pick out the tired ones.

More party bar tools

Wedding bar calculator

The whole wedding bar order and shopping list, with the toast and a signature cocktail.

Open the calculator
A cut-glass champagne glass from the 1800s

Party drinks calculator

How much beer, wine, spirits and champagne to buy for your guest count.

Open the calculator
A glass of red wine on a dark bar top

Batch cocktail & punch scaler

Scale one drink to a pitcher or a punch bowl, with dilution and ABV.

Open the calculator
An antique porcelain punch bowl with a gilded rim