Have you resolved to eat better or lose weight? Well, vegetables are low in calories and high in water and fiber. Depending on the types of vegetables, 1 cup of vegetables has only 20 to 50 calories. Contrast that with 1 cup of pasta or rice, which has about 200 calories. This is not to say that carbs don’t also have a place on your plate, but just to put the calorie difference into perspective.