The number of calories in a donut depends on the type and size of donut. According to the Centres for Disease Control and Prevention, donuts are high in calories. In addition to a high volume of calories, donuts also contain a lot of fat and sugar. 1. Cake donuts contain about 198 calories if they are of medium size. 2. A glazed donut contains about 240 calories. 3. A medium-size frosted cake donut has 251 calories, but if the donut is large, it can contain 327 calories. 4. A small frosted cake donut contains 171 calories. 5. A medium-size chocolate raised donut with frosting contains 275 calories. If it is a large donut, it contains 395 calories. 6. A regular medium-size raised donut has 242 calories, but a large raised donut has 302 calories. 7. Donuts filled with jelly are about 221 calories. 8. Donut holes can contain as little as 29 calories, but a frosted cake donut hole contains 95 calories.