How Many Calories in a Bagel?

Figuring out how many calories a bagel has all depends on the size of the bagel. A small bagel that is about 3′ diameter has about 146 calories. A medium bagel that is about 3.5′ diameter has about 182 calories. A large bagel that is about 4′ diameter has about 230 calories. There are also bagel made out of wheat that may be lower in calories.