I have had this pizza twice. Both times we ate with 4 adults who are not light eaters by any means and it was plenty. I would like to say each of us had 4 peices..they are on the smaller side for a pizza slice. The pizza's come out super fast though so if you are worried about it not being enough wait to see when it comes and if it looks like it's too small just order another personal size one. It will def be out before you finish the first. Plus you will see a million of them go by you before you even need to order.