#### How to Calculate Linear Feet of Decking Material | Hunker

Divide the total number of board inches by 12 to determine the linear board-feet measurement. For example, if our 96-inch deck length by 29 deck boards equals 2,784 board inches, then the board feet will be 232 linear feet (2,784 / 12 = 232). references & resources. Advantage Trim & Lumber Co.: Wood Decking.