Tomato contains around 22 calories

One medium whole tomato contains around 22 calories, 0 grams of fat, 5 grams of carbohydrates, 1 gram of dietary fiber, 1 gram of protein and 6 milligrams of sodium. It also provides 40 percent of the recommended daily allowance of vitamin C, 20 percent of the RDA of vitamin A, 2 percent of the RDA of iron, and 1 percent of the RDA of calcium. Here are some of the health benefits of tomatoes.