How the barbecue estimate is built
The calculator starts with per-person cooked-meat allowances, then adjusts them for appetite and how long the event will run. It then translates the cooked total back into a raw-meat shopping allowance so the grocery list reflects normal grilling loss.
After that, the planner splits the meat into burgers, sausages, and chicken portions according to the service style you choose. Sides, buns, drinks, and condiments are layered on top so the result functions as a shopping list instead of only a meat number.
Raw meat to buy = Planned cooked servings ÷ cooking yield
Allows for the fact that grilled meat loses moisture and fat, so the raw shopping weight must exceed the served weight.
Supporting items scale from guest count and menu style
Buns, side dishes, ice, drinks, and condiments are tied to the same headcount and event assumptions rather than guessed separately.