how many calories are in a medium tomato
Of course, just because they're nutritional superstars doesn't mean that tomatoes don't contain a few calories. Fortunately, the key word in that sentence is few.. Tomatoes pack hardly any calories compared with many other snack-time favorites. One medium-sized tomato contains about 24 calories. One thin slice (like you'd put on a sandwich) yields a paltry 3 calories, with an entire cup of cherry tomatoes only costing your diet 27 calories, according to Nutrition Data.