How much food per person for a buffet?

The right quantity depends on the time of day, the type of buffet and your guests. As a rule of thumb: a lunch buffet requires 350 to 450 grams per person, an evening buffet 450 to 550 grams, and a full dinner buffet with dessert can reach 650 grams or more. Below you will find a calculation table, scenarios and the most common mistakes.

The core formula for buffet quantities per person

For a lunch buffet the total is lower: 350 to 450 grams. Guests generally eat less during the day than in the evening, especially when the buffet follows a meeting or working session. A full dinner buffet with several hot dishes and a dessert station quickly calls for 550 to 650 grams per person.

For a full-service concept including dessert, cheese or an extensive snack station, allow 600 to 700 grams. That may sound like a lot, but spread over an evening of two to three hours it is a realistic amount for the average guest.

Calculating buffet quantities per person: concrete figures

The table below is based on an evening buffet with 500 grams per person as the starting point. The ranges give you room for lighter or heartier appetites.

Note: sauces and toppings are not included in the columns above, but they do form part of the total weight. Allow an additional 40 to 60 grams per person on top of the main categories.

How much food per person for each type of buffet?

The type of buffet determines the quantity just as much as the time of day. Four common situations:

Light lunch buffet (sandwiches, soup, salad)

Allow 350 to 400 grams per person. This is the minimum for a lunchtime buffet following a morning meeting. Think filled rolls, a large salad and a pot of soup. Practical, quick to set up and ideal for groups returning to work afterwards.

Standard evening buffet (hot main course with salads)

The most popular option. Allow 450 to 500 grams per person. A hot dish such as pasta, tagine or a slow-cooked cut of meat, complemented by two or three salads and bread. This works well for corporate dinners and departmental gatherings.

Extended buffet (two hot dishes, a full salad station)

With two hot choices and a wider salad selection, plan for 520 to 600 grams per person. Guests typically serve themselves from both hot dishes, which pushes the total weight up quickly. This suits celebratory dinners, anniversaries or weddings.

Full-service including dessert

Add a dessert station, cheeseboard or cake table and you are looking at 600 to 700 grams per person. Dessert is something many clients forget when calculating quantities, yet guests genuinely eat it. Especially at evenings with a programme, the total adds up fast.

Practical points to bear in mind for buffet quantities

• Time of day: a lunch buffet served from 12:00 requires less food than an evening buffet from 19:00. The time of day is the first factor to check.
• Guest profile: physically active guests such as construction workers or athletes eat 20 to 30% more than office staff. Adjust your quantities accordingly.
• Hot food cools quickly: hot dishes need chafing equipment and a tight logistics plan. If speeches run long or the buffet opens late, quality can deteriorate rapidly.
• Chilling salads and fish: these items must be kept cold until just before serving. Factor in how long they will stand outside refrigeration during set-up.
• Presentation and dish size: a buffet laid out for 50 guests looks far emptier than the same spread for 100. Plan the layout in advance, including how serving dishes will be filled.
• Dietary requirements shift proportions: when many guests are vegan or gluten-free, separate stations are needed, which affects the layout of the whole buffet.

Mistakes that can ruin the evening

• Buying too little bread and side dishes: these are the items that run out first. Guests always take more bread than you expect.
• Putting all hot dishes out at once: the first guests take large portions and later arrivals find an empty buffet. Work in batches and actively replenish the serving dishes.
• Not accounting for small groups: with fewer than 30 guests, standard pack sizes often do not match. You end up buying too much in certain categories or struggling to portion correctly.
• Forgetting dessert in the calculation: guests expect a finish to the meal. An evening that ends abruptly without dessert or a sweet course lingers in how it is remembered.
• Assuming equipment will be there: serving dishes, ladles, chafing pans and tables need to be explicitly planned. They are not automatically available at every venue.

How KOM calculates quantities

KOM works with a standard margin of 5 to 10% extra, particularly for hot dishes. A shortage of hot food cannot be resolved once the buffet has opened. A small surplus in purchasing is always preferable to guests finding empty dishes.

We tailor quantities to three factors: the time of day, the guest profile and the evening's programme. A dinner with a long speaking or music segment calls for a different timing than an informal drop-in buffet.

For groups of 100 guests or more, KOM works with rolling buffet batches. That means not all dishes are set out at once, but are replenished as the evening progresses. This keeps quality high and ensures guests always see a polished buffet.