Formula
Total food = guests × portion per guest × (1 + contingency buffer).
EVENTS
Catering Portions Calculator
Estimate entrée, side and appetizer portions.
CALCULATOR GUIDE
How to use the Catering Portions Calculator
Estimate entrée weight, side-dish quantities and appetizer pieces for a buffet or catered event.
Worked example
For 75 guests at 6 oz of entrée each with 10% buffer, plan for about 30.9 lb of entrée.
Assumptions and limits
Guest age, event duration, menu richness, dietary needs and buffet service can change consumption.
Frequently asked questions
How much buffet buffer should I add?
Around 5–15% is common, depending on guest certainty, service style and menu variety.
Do appetizers reduce entrée portions?
A substantial appetizer service can reduce later consumption, but this calculator keeps each category explicit for safer planning.
How this calculator works
Enter your known values and select Calculate result. Review units and inputs before relying on the planning estimate.
Actual quantities, prices and requirements can vary. Confirm critical work with a supplier or qualified professional.