How old do you have to be to do a wee in a potty?

Children typically start potty training between 18 months and 3 years old, though readiness can vary. Signs of readiness include showing interest in the toilet, staying dry for longer periods, and being able to communicate their needs. By the time they are around 2 to 3 years old, many children are able to use a potty successfully. However, each child develops at their own pace.