For those of you who might not know, a clementine is a fruit and is the smallest of the mandarin oranges Citrus reticulata family. The fruit is a slightly flattened sphere, about 2 inches (5 cm) in diameter and is usually sold in bulk, about 50-60 a bag. The glossy, deep orange peel is very loose on the fruit, making the jacket very easy to peel and eat. Unlike the tangerine (another fruit in the same family), the clementine is completely seedless. And, if in fact, you come across a Clementine with seeds, this shows that bees have been at work cross-pollinating the trees with other seeded fruits. All in all, when it comes to the calories in clementines, a 100g potion of Clementines contain between just 35 and 47 calories in total.