How long will it take for the belly button to heal?

It usually will takes about a week or so to completely dry off and it will fall off on its own. Please do not pull if off as you might cause an infection. Also, it's important to note that it's best to only use boiled warm water (the nurses will emphasize on it) and not soapy water. My son's cord dropped off at about the 5th day, and I kept the area dry and clean. By the following week, it's looked pretty much okay.