Indeed euro pizza goes like that : around 220 cals per 100g of dough (one pizza is 300 grams) then the mozzarella is 270 cals per 100 grams.  Tomato sauce(say you made it with no added sugars or oil) is usually around 70 cals per 100g. So yeah that puts the whole pizza around 900 calories. Then the toppings  can add quite a lot but a human charged pizza is no more than 1200 calories. Now don't get me wrong that is a calories laden dish and that should be carefully checked against your dayly intake. Personally we share one euro pizza (home made) with two people and that is the only dish we have woth no soda.