From Word's vba Help file:
Code:
MsgBox "320x240 pixels is equivalent to " _
& PixelsToPoints(320, False) & "x" _
& PixelsToPoints(240, True) _
& " points on this display."
Also from Word's vba Help file:
Code:
MsgBox "180x120 points is equivalent to " _
& PointsToPixels(180, False) & "x" _
& PointsToPixels(120, True) _
& " pixels on this display."
Excel doesn't have the same methods, so you can't do this from Excel unless you use the Windows API or an application whose object model does support them.
PS: Please don't post Excel vba queries in the Word vba forum - post them in the Excel forum.