A gallon is a unit of measurement for liquids and is commonly used for weighing milk. However, milk can be measured in different units depending on where you’re from.
If you are buying milk in another country or milk products exported from a different part of the world, you may be confused by the different weight measurements.
So, how much does a gallon of milk weigh in lbs, ounces, and kilograms?
One gallon of milk weighs 8.6 Ibs, 137.6 ounces, and 3.90 kg. However, these measurements change depending on different factors, such as the type of milk you’re buying (whole, skim, etc.), the size (liter, gallon, etc.), and the material used to make the container (glass, plastic, etc.).
Below, we look at the different types of milk in different weight units and prices.
Does the Weight of Milk Matter in Cooking Recipes?
While cooking, recipes may ask you to use a specific measurement of milk. However, these varies will vary depending on the type of milk you use.
For instance, if you use normal fresh milk and measure it with a cup, it will differ in weight from a cup of, say condensed milk or milk powder.
It is important to use the exact type of milk product specified in the recipe to get the desired results. If using milk powder, dilute it in water before measuring the required amount for your recipe.
Differences in Weight in Different Regions Explained
The main components of milk are fat, protein, and water. The fat content in cow’s milk can be up to 4.5%, proteins 4%, lactose 4%, and water circa about 87%. Additionally, milk composition varies considerably among breeds of different cattle from different regions.
Ambient temperature affects the milk yield in cows. This is because different breeds produce high yields under different temperatures.
For instance, Holsteins are more tolerant to low temperatures, whereas the Jersey breed is more tolerant to high temperatures.
Additionally, weight is measured in different units. For example, one UK liquid gallon is approximately 0.83267 US liquid gallons. One US liquid gallon is 3.78541 liters, while one UK liquid gallon = 4.54609 liters.
Is a Gallon of Water or Milk Heavier?
The answer lies in the composition of milk. Milk is about 87% water; the rest comprises fats, proteins, carbohydrates (lactose), minerals, micronutrients, and vitamins. Clean water is made up of mostly plain water.
Therefore a gallon of milk will be denser and, therefore, heavier than a gallon of water.
How Much Does a Gallon of Milk Weigh in lbs?
The answer to this question is not entirely straightforward, even though it may seem like it. That is because a gallon of milk weighs differently depending on the type of milk you purchase.
Here are some examples of the most common types of milk you may find in your local market and their weight in lbs;
- One gallon of raw milk is roughly 8.6Ibs
- A gallon of whole milk is 8.6Ib
- A gallon of pasteurized or processed milk translates to 8.6Ibs
- One gallon of Skim milk is about 8.4Ibs
- One gallon of plant-based milk translates to 8.41Ibs
How Much Does a Gallon of Milk Weigh in Kgs?
Due to differing factors, the question of milk weight in kgs will depend on the context.
In the United States, a gallon of milk weighs 8.6Ibs, (3.9kg). In the UK or Canada, a gallon of milk weighs around 10.3Ibs, (4.37kg).
Here’s how the different types of milk will weigh in kilograms when converted from one gallon;
- Raw milk 3.9kg
- Whole milk 3.9kg
- Pasteurized or processed milk 3.9 kg
- Skim milk 3.94kg
- Plant-based milk 3.81kg
How Much Does a Gallon of Milk Weigh in Ounces?
According to the US customary measurement system, a gallon of milk is 137.6 ounces, but a gallon of the same milk in the UK metric measurements weighs 164.8 ounces.
Other types of milk would weigh as follows;
- Raw milk 137.6 ounces
- Whole milk 137.6 ounces
- Pasteurized or processed milk 137.6 ounces
- Skim milk 137.6 ounces
- Plant-based milk
How Much Does a Half-Gallon of Milk Weigh?
The weight of a half gallon depends on the type of milk you are weighing. The average weight of a half gallon of milk in the US is 4.05 pounds.
- Raw milk 4.23Ib, 1.92kg
- Whole milk 4.3Ib
- Pasteurized or processed milk 4.25Ib
- Skim milk 4.2Ib
- Plant-based milk 4.3Ib
How Much Does a Gallon of 2% Milk Weigh?
2% milk is fat-reduced milk. The 2% implies that the fat content is 2% of the entire weight of the milk. A gallon of 2% milk weighs about 8.5Ibs or 3.81kgs.
This number may vary depending on the brand of whole milk you buy and if the manufacturer followed the 2% rule.
How Much Does a Quart of Milk Weigh?
Quart means a quarter of the whole. A quart of milk means a quarter of a gallon. A gallon of milk is 8.6 lb. To get a quart, we decide this by four equal parts, which comes to about 2.15 lb
How Much Does a Gallon of Milk Cost in the US?
Milk and other milk products, such as cheese, are a staple in many American homes. However, the milk price can vary dramatically from region to region and in different seasons.
On average, a gallon of whole milk costs $3.59. However, different states will have different milk prices. For instance, California’s current average milk price is $2.69 per gallon, $1,98 in Arizona, and $3,78 in Alaska.
There are also vendors selling organic milk. If you are an organic products lover, reputable sellers such as Horizon Organic are your best bet. They are easily accessible online and can deliver your milk right to your doorstep.