Food Quantity Calculator - Calculator Academy

Enter the number of people, standard serving size per person, number of meals, and efficiency of food preparation into the calculator to determine the total food quantity needed.

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Food Quantity Formula

The following formula is used to calculate the quantity of food needed for a certain number of people.

FQ = (N * S * M) / (E/100)

Variables:

FQ is the total food quantity needed (by weight; e.g., kg)
N is the number of people
S is the standard serving size per person (same weight unit as FQ; e.g., kg)
M is the number of meals
E is the efficiency of food preparation (%)

To calculate the total food quantity needed, multiply the number of people by the standard serving size per person, then multiply the result by the number of meals. Divide the result by the efficiency expressed as a decimal (E/100). For example, 80% efficiency = 0.80.

What is a Food Quantity?

In this calculator, food quantity refers to the total weight of food you need to prepare or purchase for a group. It is based on the number of people, the serving size per person (by weight), the number of meals, and an efficiency percentage to account for trimming, cooking loss, or prep waste.

How to Calculate Food Quantity?

The following steps outline how to calculate the Food Quantity (FQ) using the given formula:

First, determine the number of people (N).
Next, determine the standard serving size per person (S) in a weight unit (kg, g, lb, or oz).
Next, determine the number of meals (M).
Next, determine the efficiency of food preparation (E) as a percentage.
Finally, calculate the Food Quantity (FQ) using the formula FQ = (N * S * M) / (E/100).
After inserting the variables and calculating the result, check your answer with a calculator.

Example Problem:

Use the following variables as an example problem to test your knowledge:

Number of people (N) = 10

Standard serving size per person (S) = 0.5 kg

Number of meals (M) = 3

Efficiency of food preparation (E) = 80%