Plain pizza calories

I'm not sure any of us can answer this for you. It all depends on the size of the slice of pizza, the thickness of the crust, the type of cheese used (provolone, mozzarella, cheddar, a blend of any of these), etc. A slice of thin crust is going to be less, than a slice of thick crust ... and depending on what part of the country you are in each place makes their "slice of pizza" differently.

I love pizza, so in order to lose the most amount of weight I created a lower in calorie, at home recipe for pizza and always have a salad first before having my pizza.