In this article I am going to show how we
can create a sub site in SharePoint 2013.
Step
1: Open your site-> Go setting -> Site
Contents

Image 1.
Step
2: Scroll Down -> Click new Subsite.

Image 2.
Step
3: Give Title, Description . Select Site Template.

Image 3.
Click Create.

Image 4.
Now you can see your sub site . . .

Image 5.