A 2 × 6 × 8 board is 8 board feet by nominal dimensions.
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Board-Foot Calculator
Turn thickness, width, length, and quantity into a practical lumber-volume estimate.
Lumber math
Estimate the lumber before the cut.
Add each board size, its quantity, and your per-board-foot price. Totals include your waste allowance.
- Total lumber
- 4.0 board feet
- With 15% waste
- 4.6 BF
- At $8.75/BF
- $40.25
Rough-thickness presets use nominal values: 4/4 = 1″, 5/4 = 1¼″, 6/4 = 1½″, 8/4 = 2″, 10/4 = 2½″, and 12/4 = 3″. Actual finished thickness varies after milling.
A couple of useful details
Turn board dimensions into lumber volume.
Enter thickness, width, length, and quantity to estimate board feet. Use the result for planning and pricing; confirm actual dressed dimensions with the supplier.
One board foot is the volume of a board 1 inch thick, 12 inches wide, and 12 inches long. The calculator uses the dimensions and quantities you enter.