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RSVP Headcount → Catering Quantities

Caterers count kids as half covers, apply a service-style multiplier (buffets run 15% heavier), and plan ~450 g mains + 2.5 drinks per cover

Quick answer: Caterers count kids as half covers, apply a service-style multiplier (buffets run 15% heavier), and plan ~450 g mains + 2.5 drinks per cover — industr Free, instant, private — runs entirely in your browser.

How to use

  1. Enter your confirmed adult headcount in the Adults field.
  2. Enter children in the Children field - the tool counts each child as half a cover.
  3. Pick a Service style: Plated meal, Buffet, or Cocktail/finger food.
  4. Press Calculate / Generate to see effective covers, main-course kilograms, drink pieces, and dessert slices.
  5. Order against the Main-course kg figure first - it is the number caterers will ask you about.
  6. Re-run the numbers whenever final RSVPs arrive, because every output scales linearly with headcount.

About this tool

Caterers count kids as half covers, apply a service-style multiplier (buffets run 15% heavier), and plan ~450 g mains + 2.5 drinks per cover — industry planning numbers, not guesses.

An RSVP list is a headcount; a catering order is kilograms, trays, and drink units. This tool converts one into the other the way working caterers do. Children count as half covers, a buffet multiplies the main-course figure by 1.15 because self-service plates run heavier, and cocktail or finger-food service multiplies it by 1.3. Enter confirmed numbers in the Adults and Children fields, choose a Service style, and the tool returns effective covers, main-course kilograms at about 450 grams per cover, drink pieces at 2.5 per cover, and dessert slices at 1.2 per cover.

Order against confirmed yes replies, never the invite list; if a handful of responses are still undecided, re-run the numbers the day they land, since every output scales linearly with headcount. The per-cover figures are planning averages, not guarantees: cold weather lifts drink counts, a single crowd-pleasing dish empties buffet trays early, and dietary restrictions need a separate conversation with your caterer. The calculator also does not cover staffing, rentals, or kids' menus priced separately, so treat its output as the quantity starting point for that conversation rather than the final order sheet.

FAQ

How are the catering quantities calculated?
Children count as half covers, so effective covers equal adults plus half the children. The tool plans about 450 grams of main course per cover, multiplied by a service-style factor (plated 1.0, buffet 1.15, cocktail 1.3), plus 2.5 drink pieces and 1.2 dessert slices per cover.
Why do buffets need more food than plated meals?
Self-service plates run heavier and less predictable: guests take what they like, and popular dishes empty early. The 15 percent uplift for buffets, or 30 percent for cocktail-style service, is the standard buffer caterers apply so trays do not run out mid-event.
Should I count invited guests or confirmed RSVPs?
Always confirmed RSVPs - the people who said yes, not everyone invited. If a few replies are still undecided, enter your best confirmed figure and re-run when they answer; ordering against the full invite list is the most common way to overspend on catering.
What counts as one drink piece?
A serving unit - one glass of a soft drink, juice, or water. The 2.5-per-cover figure is a planning average across a multi-hour event and does not split alcohol, water, tea, or coffee separately, so set your own beverage order from it.
What does the calculator not cover?
Dietary restrictions, multiple main courses, separately priced kids' menus, staffing, rentals, and wastage policies are all outside its scope - it produces quantity estimates from headcount and service style only. Treat the output as a starting point and confirm final numbers with your caterer.
Do my guest numbers go anywhere?
No. Everything is computed in your browser the moment you type: no upload, no account, nothing stored, so your guest counts stay on your device. That makes it safe to work with real, partial RSVP lists while replies are still arriving.

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Your rating stays in this browser (local storage) — nothing is sent to any server.

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The complete rsvp catering calculator guide

Prefer the long version — a worked example, the mistakes people actually make, and answers to real questions? The blog guide Rsvp Catering Calculator — Complete Guide, Mistakes & FAQ covers all of it step by step.

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