A gallon of water weighs 8.34 pounds or 3.78 kilograms at standard temperature and pressure. The weight of a gallon of water will vary slightly depending on the temperature and pressure, but not enough to be noticeable without very precise measurements. A gallon of water is equal to about 3.8 liters or 128 fluid ounces.
A gallon of water weighs 8.34lbs or 3.78kg. This is based on the density of water being 1g/mL. The weight will change slightly depending on the temperature and pressure, but not enough to make a significant difference.
How much does one gallon of water weigh?
How Much Does 5 Gallon of Water Weigh
A gallon of water weighs 8.34lbs or 3.78kg. Therefore, 5 gallons of water would weigh 41.7lbs or 18.9kg.

Credit: latestnews.fresherslive.com
What is the Weight of 1 Gallon of Water in Pounds?
A gallon of water weighs 8.34 pounds, or 3.78 kilograms. This is based on the weight of water being 1 gram per milliliter. There are 3785 milliliters in a gallon, so 1 gallon of water weighs 3785 grams, or 8.34 pounds.
How Much Does 1 Gallon of Milk Weigh?
A gallon of milk weighs 8.6 pounds, or 3.8 kilograms. This is based on the standard weight of milk being 8.6 pounds per gallon.
How Much Does a 5 Gallon of Water Weigh?
A gallon of water weighs 8.34 lbs or 3.78 kg. So a 5 gallon container of water would weigh 41.7 pounds (18.9 kg).
Does Ice Weigh More Than Water?
Yes, ice weighs more than water. This is because water molecules are less dense than ice molecules. When water freezes, it becomes less dense and thus weighs more.
Conclusion
One gallon of water weighs about 8.34 pounds or 3.78 kilograms. This is based on the density of water being 1 gram per cubic centimeter or 1,000 kilograms per cubic meter. The weight of a gallon of water will vary slightly depending on the temperature and pressure, but not enough to make a significant difference.