This is a really fun project. Basically you have a chair, you move the legs up and flip it over and then you have a step stool. The chair has 2 sections linked by a piano hinge. There is a handhold on the back of the chair that makes it easier to carry. These plans have been around for a while and it’s a really popular project with woodworkers. I would say this is a medium difficulty project. Everything has the same thickness that makes it easier to build.
To download the plans, right click on the link and select “Save As”.