According to Self, one Ritz cracker – which weighs about 0.1 ounce – has 16 calories. About one calorie comes from protein, almost seven calories come from fat and the rest are carbohydrates.
Self also indicates that each Ritz cracker has 29 milligrams of sodium and less than 1 gram of fiber. One Ritz cracker is not a significant source of any vitamin. It provides 2 percent of the recommended daily value of vitamin K and 1 percent of the recommended daily value of vitamin E, thiamin, riboflavin, niacin and folate. A single Ritz cracker also does not provide many minerals. It offers 1 percent of the recommended daily value for calcium, iron, phosphorus, sodium and manganese.