If my baby is 5 months and he was almost 2 months premature when will he start crawling?

Babies crawl between 7 and 9 months but a premie is on his own schedule - 2 months early means you need to add two months to the average age babies begin crawling, sitting, standing etc. So on average a 2 month premie will crawl at 9 to 11 months.

By his first Birthday you can expect him to be almost caught up, if he doesn't have any medical issues or delays due to his premature birth.