how many teaspoons are in a gallon?
768 teaspoons in a gallon. 3 teaspoons in a tablespoon. 16 tablespoons in a cup. 16 cups in a gallon. 3 * 16 * 16 = 768. Edit. Share to: Charlie N. 120,333 Contributions. I have spent many years renovating buildings and leading a commercial handyman crew.