If they are exactly in (xxx) xxx-xxxx format then this might help
Assume A1 contains the phone number
=MID(A1,2,3)&MID(A1,7,3)&MID(A1,11,4)
Then just copy down to all the cells

This returns a 10 digit Text value
If you need it as a number excel should automatically do this for you
Or use the VALUE function
=VALUE(MID(A1,2,3)&MID(A1,7,3)&MID(A1,11,4))

George

kbkst wrote:
I am cutting & pasting phone numbers onto my excel spreadsheet. When they
are pasted, they look like this: (216) 433-7623. I need them to look like
this: 2164337623, which means I need to remove the ( ), the space and the
dash. It takes forever doing thousands of these. Is there a formula that
can be added to these cells to automatically delete these when I paste?

Hope someone can help...I am loosing my mind!

Thanks,
kbkst