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Buffet Quantity Planning Calculator

Work out buffet quantity planning instantly with clear inputs, formula shown and shareable results.

About Buffet Quantity Planning Calculator

Total food is guests times grams per guest with a contingency added, then split evenly across the number of dishes on offer. Buffet planning fails on the per-dish split rather than the total: more dishes means each is taken in smaller amounts, but the total eaten barely changes.

Formulas

Total quantity

total grams = guests x grams per guest x (1 + contingency)

Per dish

per dish = total / number of dishes

Worked example

With the default values below, Buffet Quantity Planning Calculator returns Total food to prepare of 39.60. Change any input above and every figure here is recalculated in your browser.

Inputs used

Number of guestsminimum 1
80
Food per guestminimum 50 g
450 g
Number of dishesminimum 1
6
Contingency allowanceaccepts 0–50 %
10 %

Results

Total food to prepare
39.60 kg
Quantity per dish
6.600 kg
Before contingency
36.00 kg
Per guest per dish
82.5 g

Step by step

  1. 1Values used
  2. 2Total quantity
  3. 3Per dish
  4. 4Total food to prepare= 39.60 kg
  5. 5Quantity per dish= 6.600 kg
  6. 6Before contingency= 36.00 kg
  7. 7Per guest per dish= 82.5 g

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Buffet Quantity Planning figure worked out?

total grams = guests x grams per guest x (1 + contingency). Total food is guests times grams per guest with a contingency added, then split evenly across the number of dishes on offer.

Why does this matter?

Buffet planning fails on the per-dish split rather than the total: more dishes means each is taken in smaller amounts, but the total eaten barely changes.

What do I need to enter?

Enter number of guests, food per guest, number of dishes, contingency allowance. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.

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