Global Food Cost Per Person Per day
The Average food cost per person per day, 2020 food prices:
$4.55
This reflects the amount it would cost to buy the daily food
consumed at retail market prices.
Where This Figure Comes From
Let’s start with a cost per gram, serving, and calorie for
various foods. The figures below are
from the National Institute of Health article.
The Cost Of US
Foods As Related To Their Nutritive Value.
Published in Am J Clin Nutr.
2010 Nov; 92(5): 1181–1188. Published online 2010 Aug 18. doi: 10.3945/ajcn.2010.29300
Author information
Article notes
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License information PMC Disclaimer
Major USDA food groups
|
No. of foods
|
Energy density
|
Water content
|
Serving size (RACC)
|
Price per 100 g
|
Price per serving
|
Energy cost
|
|
|
kcal/100 g
|
g/100 g
|
g
|
$/100 g
|
$/serving
|
$/100 kcal
|
|
|
|
|
|
|
|
|
Milk and milk products
|
134
|
182 ± 112
|
66 ± 17
|
112 ± 89
|
0.40 ± 0.31
|
0.26 ± 0.17
|
0.23 ± 0.13
|
Meat, poultry, and fish
|
196
|
224 ± 98
|
60 ± 14
|
89 ± 51
|
0.80 ± 0.44
|
0.63 ± 0.38
|
0.41 ± 0.31
|
Eggs
|
8
|
171 ± 74
|
72 ± 10
|
65 ± 28
|
0.32 ± 0.16
|
0.24 ± 0.21
|
0.22 ± 0.14
|
Dry beans, legumes, nuts, and seeds
|
62
|
330 ± 217
|
40 ± 33
|
76 ± 62
|
0.50 ± 0.47
|
0.26 ± 0.22
|
0.18 ± 0.17
|
Grain products
|
435
|
337 ± 110
|
24 ± 23
|
63 ± 53
|
0.47 ± 0.3
|
0.23 ± 0.20
|
0.14 ± 0.10
|
Fruit
|
93
|
67 ± 56
|
82 ± 15
|
157 ± 77
|
0.28 ± 0.22
|
0.40 ± 0.33
|
0.54 ± 0.48
|
Vegetables
|
257
|
83 ± 80
|
80 ± 17
|
102 ± 59
|
0.33 ± 0.26
|
0.29 ± 0.33
|
0.68 ± 0.69
|
Fats, oils, and salad dressings
|
51
|
390 ± 226
|
47 ± 23
|
22 ± 9
|
0.37 ± 0.18
|
0.09 ± 0.08
|
0.17 ± 0.19
|
Sugars, sweets, and beverages
|
151
|
242 ± 190
|
45 ± 39
|
119 ± 102
|
0.40 ± 0.41
|
0.23 ± 0.18
|
0.22 ± 0.21
|
They show global costs based on averages (the first figure)
and high and lows (plus or minus the second figure on the chart).
Food cost per person per day:
The sections below go over information for different age
groups, sexes, and levels of activity for different people. It shows an age and sex adjusted average of
2,194 Kcal per day as the daily requirement per average person. Using this information we can calculate the
low, high, and average cost of food, per person per day, globally. Then, using nutritional averages for ratios
of foods, we can calculate the average food cost per person per day.
This figure works out to $4.55 per person per day. This figure is based on people buying their
food at market prices. It is important
to note that many people in many parts of the world raise their own food, so
their actual cost will be lower than this.
In other words, we would expect the actual average food cost, per
person per day, to be less than $4.55.
Let’s look at where this figure comes from:
Per the table, grain costs per 100 Kcal are between $.04 and
$0.24, with an average of $0.14, This
leads to an average cost to feed a person per day with grains at:
1. Lowest cost (using grains at $0.04 per 100 Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.04 =
$0.88 per person per day
2. Highest cost (using grains at $0.24 per 100 Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.24 =
$5.27 per person per day
3. Average cost (using the mean grain price of $0.14 per 100
Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.14 =
$3.07 per person per day
The recalculated food cost per person per day for 2,194
Kcal, based solely on grain prices, is:
- Lowest: $0.88
- Highest: $5.27
- Average: $3.07
The same calculations for meats are:
1. Lowest cost (using meats at $0.41 - $0.31 = $0.10 per 100
Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.10 =
$2.19 per person per day
2. Highest cost (using meats at $0.41 + $0.31 = $0.72 per
100 Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.72 =
$15.80 per person per day
3. Average cost (using the mean meat price of $0.41 per 100
Kcal):
- 2,194 Kcal =
21.94 units of 100 Kcal
- 21.94 × $0.41 =
$9.00 per person per day
So, the recalculated food cost per person per day for 2,194
Kcal, based solely on meat prices, is:
- Lowest: $2.19
- Highest: $15.80
- Average: $9.00
Together
A common global dietary pattern might look something like
this:
1. Grains and other plant-based foods (including fruits,
vegetables, legumes): about 75-80% of caloric intake
2. Animal-based foods (including meat, dairy, eggs): about
20-25% of caloric intake
For simplicity, let's use a 75/25 split between grains (representing
all plant-based foods) and meats (representing all animal-based foods).
So for our 2,194 Kcal daily requirement:
- Grains (and other plant-based): 75% = 1,645.5 Kcal
- Meats (and other animal-based): 25% = 548.5 Kcal
Now, let's calculate the cost using the average prices we
determined earlier:
- Grains: $0.14 per 100 Kcal
- Meats: $0.41 per 100 Kcal
Cost calculation:
1. Grains: (1,645.5 / 100) × $0.14 = $2.30
2. Meats: (548.5 / 100) × $0.41 = $2.25
Total daily food cost: $2.30 + $2.25 = $4.55 per person per
day
This mixed diet approach gives us a more realistic estimate
of global food costs, falling between our previous all-grain and all-meat
calculations.
This would be about the rough price for food per day per
person if people bought their food in markets with standard markup rates over
wholesale and had to pay global prices.
We would expect the actual price per day to always be lower
than these numbers for the following reasons:
1. Local price differences: If local prices are lower than
world prices, no food will be imported and food will be sold for lower than
world market prices. In many areas, local food prices may be cheaper than
global market rates, which would reduce the average daily food cost.
2. Self-production of food: When people grow their own food,
they can significantly reduce their daily food costs, as they don't have to pay
retail prices or account for transportation and middleman costs.
3. The $4.55 figure assumes "standard markup rates over
wholesale," but in reality, there may be areas with lower markup rates or
more competitive pricing.
4. Government subsidies, food assistance programs, or other
interventions in some regions could further lower the actual cost for many
individuals.
These factors combined suggest that the actual average daily
food cost per person is likely to be below the $4.55 figure.
Details and Figures
Calories
There is no difference between calories listed on food
labels and kcal (kilocalories). The term "calorie" on food labels is
used colloquially to mean kilocalorie.
To clarify:
1. A calorie (with a lowercase 'c') is the amount of energy
needed to raise the temperature of 1 gram of water by 1 degree Celsius.
2. A kilocalorie (kcal) is 1000 calories.
3. The "Calorie" (with a capital 'C') used in
nutrition is equivalent to 1 kcal.
When you see "calories" on food labels, it's
referring to kilocalories (kcal). This practice can be confusing, as it's not
technically correct, but it has become standard in food labeling and
nutritional contexts.
For example, if a food label says "100 calories,"
it actually means 100 kilocalories or 100,000 small calories.
This convention is used in many countries, including the
United States. Some countries, particularly in Europe, may list energy content
in both kcal and kilojoules (kJ) on their food labels.
Nutritional Requirements
Here's a breakdown of estimated daily caloric needs:
Adult Males (19-30 years):
- Sedentary: 2400-2600 kcal
- Moderately active: 2600-2800 kcal
- Active: 2800-3000 kcal
Adult Males (31-50 years):
- Sedentary: 2200-2400 kcal
- Moderately active: 2400-2600 kcal
- Active: 2600-2800 kcal
Adult Females (19-30 years):
- Sedentary: 1800-2000 kcal
- Moderately active: 2000-2200 kcal
- Active: 2400 kcal
Adult Females (31-50 years):
- Sedentary: 1800 kcal
- Moderately active: 2000 kcal
- Active: 2200 kcal
Children:
- 2-3 years: 1000-1400 kcal
- 4-8 years: 1200-2000 kcal
- 9-13 years (boys): 1600-2600 kcal
- 9-13 years (girls): 1400-2200 kcal
- 14-18 years (boys): 2000-3200 kcal
- 14-18 years (girls): 1800-2400 kcal
These ranges account for different activity levels. The
lower end is for sedentary individuals, while the higher end is for more active
individuals.
Breakdown by age and sex
Certainly. I can provide you with an approximate breakdown
of the global population by age and sex. Please note that these figures are
estimates and can change over time due to various demographic factors. As of my
last update in April 2024, here's a general overview:
Age Distribution:
1. 0-14 years: 25.3%
2. 15-24 years: 15.2%
3. 25-54 years: 40.7%
4. 55-64 years: 9.6%
5. 65 years and over: 9.2%
Sex Distribution:
1. Male: 50.4%
2. Female: 49.6%
total food consumption by sex and age group, table:
Age Group
|
Sex
|
% of Population
|
Number (millions)
|
Avg. kcal/person/day
|
Total 100s Kcal/day (billions)
|
0-14
|
Male
|
12.75%
|
1,020
|
1,900
|
193.80
|
|
Female
|
12.55%
|
1,004
|
1,700
|
170.68
|
15-24
|
Male
|
7.66%
|
613
|
2,600
|
159.38
|
|
Female
|
7.54%
|
603
|
2,200
|
132.66
|
25-54
|
Male
|
20.51%
|
1,641
|
2,600
|
426.66
|
|
Female
|
20.19%
|
1,615
|
2,200
|
355.30
|
55-64
|
Male
|
4.84%
|
387
|
2,400
|
92.88
|
|
Female
|
4.76%
|
381
|
2,000
|
76.20
|
65+
|
Male
|
4.64%
|
371
|
2,200
|
81.62
|
|
Female
|
4.56%
|
365
|
1,800
|
65.70
|
Total
|
|
100%
|
8,000
|
-
|
1,754.88
|
Notes:
1. Numbers are rounded for simplicity.
2. The average kcal/person/day is estimated based on
moderate activity levels and adjusted for sex differences.
3. The total 100s Kcal/day (billions) is calculated by
multiplying the number of people by the average kcal per person, then dividing
by 100.
4. The total at the bottom represents the sum of all groups.
Summary
1,754.88 billion units of 100 Kcal = 175.488 billion Kcal
total per day
175.488 billion Kcal / 8 billion people ≈ 2,194 Kcal per
person per day
This average of about 2,194 Kcal per person per day is much
more reasonable and aligns with global nutritional estimates.