Where each number on this page comes from
Caterers price events from per-head rules, not recipes. This calculator runs the same rules, so the output looks like a catering order sheet rather than a meal plan.
- Appetizers. Six pieces per adult at a drinks-only party, four before a buffet, three before a plated dinner. Each hour past the second adds another piece or two per head, capped so a five hour reception does not ask for a second dinner in canape form.
- Main protein. Six ounces of cooked meat per adult at a buffet, eight at a sit-down dinner or cookout. The shopping figure divides cooked weight by 0.75, because meat loses about a quarter of its weight on the grill or in the oven.
- Children. Half an adult food portion, no alcohol, soft drinks at 70 percent of the adult rate. Cake is the exception. Kids take a full slice, so dessert counts every head.
- Time of day. A 3pm party lands between meals and appetite falls with it. The afternoon setting trims food by 35 percent, midday by 10.
- Drinks. One serving in the first hour, one for every hour after. A 750 ml wine bottle pours five glasses, a 750 ml spirit bottle pours sixteen 1.5 ounce measures, one beer bottle is one serving. Warm weather adds 15 percent.
- Ice. One and a half pounds per guest indoors, two pounds outdoors, scaled by how long the party runs.
- Space. Six square feet per standing guest, eight around a grill, ten at a buffet, twelve for a seated dinner once you allow for chairs pushed back from tables.
When a figure lands between two pack sizes, round up on ice, water and napkins. Round down on main protein. Leftover brisket is one household's problem for a week. Warm drinks are everyone's problem for the rest of the night.
Ice runs out first. It always does.
Hosts buy ice for the drinks and forget the cooler underneath them. A 30 guest cookout on a warm afternoon burns through 60 pounds, and half of that melts before the first guest arrives.
Two habits fix most of it. Chill drinks the night before so the cooler ice is not doing the cooling work, and keep serving ice in a separate bag nobody digs through with a wet hand.
Napkins are the other quiet shortage. Three per guest sounds generous until a plate of ribs proves otherwise.
Three parties, three shopping lists
The preset buttons above load these exact setups. Numbers below come straight from the calculator.
Backyard cookout, 30 people
24 adults, 6 kids, four hours, outdoors, most adults drinking.
- 18 lb raw meat, 41 patties, 41 buns
- 122 appetizer pieces before the grill starts
- 34 beers, 5 bottles of wine, 60 lb ice
- 240 sq ft of yard, 21 seats
Office drinks, 60 people
Three hours, evening, appetizers standing in for dinner.
- 450 appetizer pieces, roughly 8 per person
- 50 beers, 7 bottles of wine, 68 lb ice
- 90 small plates, 240 napkins
- 360 sq ft, seating for 18 of the 60
Seated reception, 120 people
100 adults, 20 kids, five hours, plated service.
- 73 lb raw protein, 120 dessert servings
- 175 beers, 25 bottles of wine, 225 lb ice
- 15 guest tables, 3 serving stations
- 1,440 sq ft of floor before the dance space
The reception line shows why venues quote per head so confidently. Cross that guest count and every number moves together, which is also the moment a rental order stops being optional.
What this calculator refuses to guess
Portion rules describe an average room. Your room has specific people in it.
- Dietary splits stay out of scope. A table where a third of guests skip meat needs the protein figure cut by hand and the sides raised to match.
- The budget line multiplies your own per-head numbers. Toolexe does not track grocery prices, so those two fields start at rough national-range defaults and expect editing. Treat the total as a planning figure, not a quote.
- Bone-in cuts, whole birds and shell-on seafood need more raw weight than the boneless figure shown. Add 40 to 50 percent for bone and shell.
- Alcohol splits assume a mixed crowd at 50 percent beer, 35 percent wine, 15 percent spirits. A wine-heavy group or a cocktail bar breaks that ratio.
- Nothing here accounts for local licensing, corkage or venue rules on outside food.
For the pieces this page skips, other calculators fit better. Splitting the tab afterwards is a job for the tip calculator, and comparing two catering quotes is closer to the cost comparison calculator.
