One way

In B1
=RIGHT(A1,2)&"/"&MID(A1,3,2)&"/"&LEFT(A1,2)

In C1

=TEXT(B1,"mm/dd/yy")


or just this in B1

=MID(A1,3,2)&"/"&LEFT(A1,2)&"/"&RIGHT(A1,2)

VBA Noob