Yes, Sketchup is an excellent tool for producing a floor plan, particularly if you only need to calculate the floor space. But before you start Sketchup, you'll need to take some measurements of the space. As many measurements as possible should be taken.
In a digital 2D format, a 2D plan is a basic graphic that provides a clear overview of a site or building. AutoCAD 2D is commonly used to create them. Layouts, furniture placement, walls, doors, windows, and landscaping are all conveyed using them.