LF (Linear Foot) to MSF (Thousand Square Foot) pricing conversion.

Buyer stocks inventory in the LF UoM but purchases it in the MSF UoM and would like to automatically see the unit price in each of the UoM's on the purchase order.

I do not see using the Item Master Data screen > purchasing tab and alternate UoM because there is the addition of "Width" to this formula but want to see if anyone has information on this.