Catering Quantity Calculator

Plan catering quantities using guests, portion sizes and an extra allowance. Enter your own values below to see food quantity required and check the method behind it.

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Your inputs

Change the example values to match your situation.

Your result

Let’s work it out.

Fill in your inputs and select Calculate.
Your result and breakdown will appear here.

How this calculator works

Quantity = people × grams per person × (1 + extra allowance). Set portion size for your menu and guests.

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What is Catering Quantity Calculator?

Catering Quantity Calculator helps you plan catering quantities using guests, portion sizes and an extra allowance.

The main result is food quantity required. The formula, example and assumptions below explain how to interpret it.

How to use Catering Quantity Calculator

Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.

  1. Gather people to serve, food quantity per person (g) and extra quantity allowance (%). Use values from the same situation or reporting period.
  2. Replace the example people to serve with your own value, then complete the other fields. Check the displayed units.
  3. Select Calculate and read food quantity required. Change one input and calculate again to compare a second scenario. Reset restores the original example.
  • Enter people to serve, at least 1 and at most 10000. Use a whole number.
  • Enter food quantity per person in g, at least 0. Decimals are accepted.
  • Enter extra quantity allowance in %, at least 0 and at most 100. Decimals are accepted.

Catering Quantity Calculator: a worked example

With the inputs below, the result is 7.7 kg (food quantity required). Follow the example, then replace these illustrative values with your own.

Example inputs and output
Input or outputExample value
People to serve20
Food quantity per person (g)350 g
Extra quantity allowance (%)10 %
Food quantity required7.7 kg

Understanding the Catering Quantity result

The main output is food quantity required, expressed in kg. It applies to the inputs and operation you selected.

Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.

Catering Quantity Calculator: assumptions and common mistakes

A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.

  • Cups measure volume; grams measure mass. Use an ingredient-specific density and keep raw and cooked portion sizes separate.

For wider guidance, visit FSSAI. The formula and scope of this specific tool are stated on this page.

Catering Quantity Calculator FAQs

What does Catering Quantity Calculator calculate?

Catering Quantity Calculator helps you plan catering quantities using guests, portion sizes and an extra allowance. Its main output is food quantity required in kg.

What inputs do I need for Catering Quantity Calculator?

You need people to serve, food quantity per person (g) and extra quantity allowance (%). Use the field labels and units to match your figures to the formula.

Which formula does Catering Quantity Calculator use?

Quantity = people × grams per person × (1 + extra allowance). Set portion size for your menu and guests.

What is a worked example for Catering Quantity Calculator?

Example inputs: People to serve: 20; Food quantity per person: 350 g; Extra quantity allowance: 10 %. The result is 7.7 kg (food quantity required).

How should I enter people to serve?

Enter people to serve, at least 1 and at most 10000. Use a whole number.

How do I choose food quantity per person?

Enter food quantity per person in g, at least 0. Decimals are accepted. The example uses 350 g; replace it if your circumstances differ.

How should I read food quantity required?

The main output is food quantity required, expressed in kg. It applies to the inputs and operation you selected.

Why might my Catering Quantity Calculator result differ from my records?

Cups measure volume; grams measure mass. Use an ingredient-specific density and keep raw and cooked portion sizes separate. Differences in entered values, units or rounding can also change the comparison.

Can I compare two scenarios in Catering Quantity Calculator?

Yes. Note your first food quantity required, change people to serve or another input, and select Calculate again. Editing a field clears the old result so it is not mistaken for a new calculation.

Is Catering Quantity Calculator free, and where are my inputs calculated?

This calculator is free to use without signing in. Its formula runs in your browser; calculator inputs are not sent to a calculation API. The inputs reset to the example values when you reset the form or start a fresh page.