How much does a gallon of milk weigh?

Metric Conversion

How much does a gallon of milk weigh? A gallon of milk weights about 8.6 pounds.

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The density of milk is about 1.03 kilograms per liter therefore 1 liter of milk weighs very near to 1 kilogram. There are many ways to calculate how much a gallon of milk weighs.  Everybody in every countries drink milk almost on a daily basis.

How much does a gallon of milk weigh

Children specially drink them every day. The first food of a newborn is the milk. Milk is an important source of food because it is one of the super drinks. It is just as good as an egg. It is full of nutrition. A glass of milk can provide you with enough energy to do a lot of work without getting tired or hungry. The farmers sell the milk and they are calculated in gallons. They send big trucks of milk from the farm to the city. The weight of the milk varies on the type of milk whether it is light or heavy. The heavy milk has a higher weigh per gallon than a light one.

Let us see how we can find how much a gallon of milk weighs. 

The answer is always in a decimal because we can never be sure about the precise weight as it is an organic product. Due to the fat present in milk, the weight can be different at different times. We know that 1 liquid gallon is equal to 128 fluid ounces. It means that 1 gallon is equal to more than 15 cups and 128 fluid ounces is equal to 4 liquid quarts.  You can first calculate how much is in 1 pound. Later, divide 1 by 16. Then, multiply with 128 fluid ounces.

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1 gallon = 128 fluid ounce

1 pound = 16 fluid ounce

16 oz. = 1 lb.

1 oz. = (1 / 16) lb.

128 oz. = (1/16) X 128 = 8

It means that there is more than 8 pounds in a gallon of milk. It is slightly more than 8 because of its density and the fat content.

Another way to know is by knowing the amount of milk in liters. There is 3.79 liters in a gallon of milk. 3.79 liters is equal to 128.6 fluid ounces. 3.79 liters is 3.79 kilograms in case of water. We can use these term here because milk is 90 percent water. Hence 3.79 kilogram is 8.35552 pound. Again, we are with the result that a gallon of milk is more than 8 pounds.


3.70 l = 3.79 kg

3.79 kg = 8.35552 pounds

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