How many grafts do I need?

I’m 24 and I want to get a hair transplant, so how many grafts will I need?

You need a Personalized Master Plan: https://baldingblog.com/go-why-do-we-need-a-master-plan/. You need to lay out what your worst case balding is and balance that against your available donor supply capacity before starting the hair transplant process. You will find many doctors willing to quote you 1500, 2000, 3000, 4000 grafts for your problem. Is your hair fine, medium or coarse in thickness? How do you tell which is right and when you should tackle it?