New emphasis has been placed on the weight of whole trees and portions of trees. Weight inventories and purchase of wood by weight are becoming increasingly common for saw logs as well as pulpwood. More information needs to be gathered on the weight of portions of tree stems, however, before weight can be a standard measurement unit. This information must also be flexible enough to be used with varying utilization standards so that new inventories will not be required when a standard changes. The objective of this study was to develop main stem green and dry weights with and without bark to various top diameters inside and outside bark for red oak, white oak, and maple in the Appalachian region of Virginia.