The same calories that are in other foods, the type that is a unit of energy-producing potential supplied by food and released upon oxidation by the body, equal to the amount of energy required to raise the temperature of 1 kilogram of water by 1�C at one atmosphere pressure.
Another one of these silly questions with insufficient information to even hazard an estimate.
How big a baguette are we talking about?
They are not all the same size!