Buffet Food Quantity Calculator
Estimate buffet protein, starch, vegetable and total prepared kilograms from guests and menu portions.
Your results
Calculation breakdown
- Component quantity
- guests × prepared grams per guest × (1 + allowance) ÷ 1,000
Worked example
For 100 guests at 180 g protein, 150 g starch and 180 g vegetables plus 10%, prepare 56.1 kg total: 19.8, 16.5 and 19.8 kg.
Assumptions
- Portions are prepared edible weights.
- One allowance percentage applies to all three menu components.
Sources
Rates effective 23 August 2026.
How this calculator works
Estimate protein, starch and vegetable prepared kilograms for a buffet from guest count, selected grams per guest and an overall allowance. Separate menu components let planners adjust a balanced menu without hiding all food behind one average portion figure. Inputs and intermediate values stay visible so an Australian club, venue or food team can reproduce the estimate and replace assumptions with measured operating data.
Frequently asked questions
Which inputs matter most for the buffet food quantity result?
Set component portions from the actual menu, guest profile, service period and previous comparable events. Keep the measurement period and definitions consistent when comparing results.
What is not captured by this buffet food quantity calculation?
Dish popularity, bone and trim, dietary substitutions, multiple sittings and self-service replenishment affect the required quantities. Treat the output as one planning measure rather than a complete operating decision.
When should the buffet food quantity estimate be recalculated?
Recalculate when quantities, participants, rules, equipment, packaging or operating conditions change. For this topic, set component portions from the actual menu, guest profile, service period and previous comparable events.