You can, but this is a pretty simple baby bunting and the conversion is kind of a pain. Instead, go to ravelry and type in "baby bunting" in the pattern search, and you'll find plenty of free knitting patterns (66 of them) that are similar and simple. If you do not have a ravelry account, it takes 10 seconds to set one up. Good luck!
"Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, 'I will try again tomorrow.' "