The answer is yes, a bathroom door can open out into the hallway. There are a few things to consider when making this decision, such as the size of the bathroom and the amount of traffic in the hallway. If the bathroom is small, it may be difficult to open the door without hitting something or someone in the hallway. If the hallway is busy, it may be disruptive to have a door constantly opening and closing. Keep these things in mind when making your decision.