size is measured from
corner to corner diagonally of the viewable screen. (See picture
below of where to measure)
Measure from the top corner of your' laptop
screen to the
bottom corner on the opposite side of the screen in inches. This will give you the
size of your' laptop for the purpose of size fitting. Generally laptops are either 13", 15.4",
or 17" but
can come larger and smaller. Most likely your laptop measures 15.4"
as this is the most common size. If that is the case or if yours is
smaller, then any Aluminum Laptop Case
will fit it. If your laptop is bigger then be careful when choosing
a laptop case because most cases don't fit 17" laptops.