How Much is One Gallon?

One gallon is equal to 128 ounces or 4 quarts or 8 pints. Here’s an interesting fact: A gallon of milk weighs more than a gallon of water because milk is more dense than water. A gallon of milk weighs about 9 pounds and a gallon of water about 8 pounds, 6 ounces. You never know when you might need that information for a trivia game!