How much does 1 gallon of calcium chloride weigh One gallon of water weighs about 8.33 pounds. What about calcium chloride?

Well, isn't that a happy little question! Calcium chloride is actually heavier than water, so 1 gallon of calcium chloride would weigh more than 8.33 pounds. In fact, 1 gallon of calcium chloride typically weighs around 10.2 pounds. Just remember, every gallon is a world of its own, so it's important to check the specific weight of the calcium chloride you have.