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How Much Food to Order for a Meeting: Portions That Actually Work

Hands portioning sandwiches and salads for meeting catering
22Aug

Plan on 1 to 1.25 lb (0.45 to 0.57 kg) of total prepared food per adult for a fully catered meeting, then add a buffer on top based on how you’re serving it. That’s the number to build your order around before you touch a menu.

Break that weight down by category and it looks like this:

  • Protein: 150 to 225 g (5 to 8 oz) per person
  • Starch: 100 to 150 g (3.5 to 5 oz) per person
  • Vegetables or salad: 100 to 150 g (3.5 to 5 oz) per person
  • Dessert: 75 to 100 g per person

Add a buffer on top of those totals: 5 to 10% for plated meals, 10 to 15% for buffet service, and 15 to 20% for cocktail-style events, according to industry catering guidance. That’s the single figure most planners get wrong, and it’s the one that keeps you from running out of food at 1 p.m.

Key Takeaways

Catering quantities for meetings come down to one baseline weight per person, adjusted by a service-format buffer and corrected for cooked-versus-raw conversion before you place the order.

Point Details
Use the baseline weight Plan 1 to 1.25 lb (0.45 to 0.57 kg) total food per adult for a full meeting meal.
Match buffer to format Add 5 to 10% for plated, 10 to 15% for buffet, 15 to 20% for cocktail-style service.
Convert cooked to raw Account for 25 to 40% shrinkage when buying raw meat for cooked portion targets.
Label special diets separately Add dietary-specific portions on top of the headcount instead of shrinking standard dishes.
Order through a meeting specialist Theofficelunch builds category breakdowns and dietary labeling into every platter order for London and Surrey meetings.

Table of Contents

Catering Quantities for Meetings: Per-Person Weights and Conversions

Getting from “we have 40 people” to an actual purchase order means knowing weight per category and how much raw ingredient turns into cooked, servable food. The NHS’s portion-size guidance puts total prepared food at roughly 0.5 kg (1.1 lb) per person for a full meal, split across protein, starch, and vegetables. WebstaurantStore’s portion guide adds useful detail: protein runs 4 to 6 oz for plated service but jumps to 6 to 8 oz for buffets, since guests naturally take more when they’re serving themselves.

Diagram showing catering portion sizes per food category and service style

Here’s the part most spreadsheets miss: raw weight isn’t cooked weight. Meat typically loses 25 to 40% of its weight during cooking, so if your recipe needs 6 oz of cooked chicken per person, you’re buying closer to 9 or 10 oz raw. Rice and pasta follow their own math too. Plan on about 75 g of dried rice or pasta per person if it’s the main starch, or 37 g if it’s a side dish, per Love Food Hate Waste’s portion calculator.

The formula that ties it all together:

  1. Pick your per-person portion weight for each category (protein, starch, veg, dessert).
  2. Multiply by your headcount.
  3. Multiply the result by (1 + your buffer percentage).
  4. Convert cooked-weight targets to raw purchase weight for anything you’re cooking from scratch.

That last step is where most first-time office caterers overspend or underspend. Skip it and you’re guessing.

How Service Style Changes Your Quantities

The format you choose changes how much food disappears, and it’s not a small difference. Buffets run 10 to 15% higher than plated meals because self-serving guests overestimate their appetite and pile plates. Cocktail-style events need 15 to 20% on top of baseline, since guests graze over a longer window and portion control basically doesn’t exist once passed trays are involved.

Duration matters just as much as format. A 45-minute lunch meeting sees one wave of plates; a three-hour all-day session with a working lunch sees people drifting back for seconds an hour later. Evening events also tend to run heavier than midday ones, since dinner appetites outpace lunch appetites across the board.

  • Plated meetings: add 5 to 10%
  • Standard buffet: add 10 to 15%
  • Cocktail-style or grazing events: add 15 to 20%
  • Multi-hour sessions: lean toward the top of your format’s range

Pro Tip: If your event pairs a cocktail hour with a plated dinner afterward, trim the cocktail-hour portions by about 25%. Guests who know a full meal is coming eat less during the mingling stage, and you’ll avoid paying for food nobody touches.

Worked Examples: What to Order for 25, 50, and 100 People

Variety of catering trays for different meeting sizes

Numbers get real once you’re staring at a headcount and a delivery deadline. Here’s what a standard buffet lunch looks like at three common meeting sizes, using a 10% buffer and cooked-weight totals.

Sandwich platters follow their own logic, and this is where most office administrators actually place orders. Plan on 1.5 to 2 sandwich halves per person for a lunch meeting, or roughly 3/4 to 1 whole sandwich per attendee if lunch is the main event rather than a side option:

  • 20 people: 2 to 3 standard platters (12 to 16 half-sandwiches per platter)
  • 40 people: 4 to 5 platters
  • 60 people: 6 to 7 platters, plus a backup platter if the meeting runs past two hours

A cocktail event at 100 guests using the same protein baseline would need roughly 45 lb instead of 41.3 lb.

Do Dietary Needs Change the Math?

Yes, but not the way most people assume. The fix isn’t shrinking your standard dishes to make room for special diets. It’s ordering separately labeled portions on top of your baseline headcount. Cutting five vegetarian meals out of your main headcount total just means five people on the standard menu go without, and now you’ve got two frustrated groups instead of one satisfied group.

A few adjustment rules worth building into your headcount:

  • Children typically eat about half an adult portion, so count each child as 0.5 in your total headcount math.
  • If you know the group skews toward big eaters (a warehouse team, a construction crew, a room full of contractors), add 15 to 25% on top of your standard buffer, per portion guidance from catering专家 Chef Dumas.
  • Raise your buffer further when RSVPs are soft, the event is outdoors, or the session runs long enough that people wander off and back.

Pro Tip: Always ask for a headcount of confirmed dietary requirements, not estimated ones. A vague “a few people are vegetarian” note leads to under-ordering nearly every time.

Turning Your Estimate Into an Actual Order

Once you’ve got your numbers, the order itself needs a few specifics nailed down before the caterer confirms anything.

  1. Lock in your final headcount and the cut-off time for changes, plus your exact delivery window.
  2. Ask for a category breakdown, not just a total weight, so you can confirm protein, starch, and vegetable portions match what you calculated.
  3. Clarify whether quoted weights are cooked or raw. This single question avoids most quantity disputes.
  4. Confirm dietary labeling is clear on each tray or box, and ask how reheating or hot-holding is handled if food arrives before service.
  5. Check whether crockery, utensils, and napkins are included or need separate ordering.
  6. Nail down drinks and ice quantities in writing, since these get forgotten more than any food category.
  7. Get the buffer policy in writing: who pays for extra portions if headcount rises last minute, and what happens to leftovers.

Basic food safety practices matter here too. Chilled items need to stay cold until service, and any gap between delivery and serving time should be as short as possible. A meeting lunch ordering checklist can help you track all of this without missing a step.

Where Theofficelunch Fits Into This Math

Theofficelunch has been delivering office catering across London and Surrey since 2015, built specifically around meetings rather than weddings or large public events. That distinction matters because meeting catering has different constraints: tight delivery windows, dietary labeling that has to be unmistakable, and food that needs to hold its temperature through a two-hour board session.

A few things that make it a practical fit for the portion rules above:

  • Menu breadth spanning sandwich platters, wraps, salads, breakfast items, and desserts, so the category math in this guide maps directly onto real order options.
  • Clear dietary labeling on every platter, which solves the “separate portions, not smaller portions” problem outlined earlier.
  • Reliable delivery timing built around meeting schedules rather than general event slots.

It suits board lunches, client-facing meetings where presentation matters, and departmental all-hands where headcount can shift right up to the morning of the event.

What the Portion Guides Get Wrong

Most portion guides treat catering math like a fixed formula. It isn’t. The 1 to 1.25 lb baseline is a solid starting point, but the real skill is knowing which direction to push it, and most planners push the wrong way.

Or they under-correct because a vendor’s suggested portion looked generous on paper, then run out of vegetarian trays by noon. The fix isn’t a bigger buffer across the board. It’s matching the buffer to the actual variable driving your risk: an unconfirmed headcount needs a bigger cushion than a confirmed one, a three-hour session needs more than a 45-minute standup, and a group of contractors needs more protein than a room of desk workers.

The other thing conventional advice underrates: cooked versus raw weight confusion causes more shopping-list errors than bad portion sizing ever does. Get that conversion right and half your ordering problems disappear before you even think about buffers.

Skip the Spreadsheet: Order Meeting Catering Direct

Working through portion math for every meeting eats into time you don’t have, especially when the headcount changes twice before Thursday. Theofficelunch removes that step entirely: you tell us the headcount and dietary needs, and we handle the category breakdown, the buffer, and the delivery timing ourselves.

Theofficelunch

That’s the core difference between building your own shopping list and ordering direct. Our sandwich platters come sized for exactly the group counts covered above, from a 20-person board lunch to a 100-person all-hands, with dietary labeling built in so you’re not manually flagging vegetarian or allergen trays. Delivery lands at the temperature and time your meeting actually starts, not a rough estimate window.

If you’re ready to convert your headcount into an order instead of a spreadsheet, browse office catering options for London and get a quote based on your actual meeting size and format.

Frequently Asked Questions

How much food should I order per person for a meeting?

How do I calculate catering amounts for corporate events with an unconfirmed headcount?
Use your highest likely RSVP estimate and push your buffer toward the top of the range for your service style, since uncertain headcounts carry more risk than confirmed ones.

How many sandwiches do I need for 20 people?
Plan on 1.5 to 2 sandwich halves per person, which works out to 2 to 3 standard platters for a group of 20, depending on platter size.

Do I need to order less food if some guests have dietary restrictions?
No. Order dietary-specific portions as an addition to your standard headcount total, not as a replacement for standard dish quantities.

How much should I budget for drinks and ice at a meeting?
A common guideline is two beverage servings per person plus roughly 1 lb of ice per person for a half-day event, more for longer sessions or warmer conditions.

Sources

For portion baselines, the NHS’s guide to portion sizes is the most reliable reference point for balanced-meal proportions. For buffer percentages and worked math, UseCalcPro’s catering portions guide breaks down service-style adjustments in more depth. For category-by-category weights, WebstaurantStore’s portion size guide covers plated versus buffet differences across food types.

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