How many carbs are in a tomato?

In a small tomato that is about 2 inches in diameter and weighs 91 grams, there are 4 grams of carbohydrates. In this serving size, there also is 1 gram of fiber, 1 gram of protein, 2 grams of sugar and 16 calories.

Tomatoes are also good sources of vitamins A and E, and the minerals phosphorus and potassium. Red tomatoes are also known to contain the antioxidant lycopene, a carotenoid. The antioxidant property of lycopene may be beneficial for bone health. Some other benefits associated with tomatoes are that they may help lower total cholesterol and also be good for heart health.