Lumber / Board Feet Calculator
Calculate board feet of lumber needed from dimensions and piece count.
Assumptions used in this calculation
- Nominal dimensions: Uses the nominal lumber size you enter (e.g. a '2×6'), actual dressed/finished lumber is typically smaller (a nominal 2×6 is actually about 1.5×5.5 inches), which matters for structural calculations but not for pricing, since lumber is sold by nominal size.
- No cutting waste: Doesn't add any allowance for kerf loss or waste from cutting boards to final length.
About this calculator
The board feet calculator converts lumber dimensions (thickness, width, length) and piece count into total board feet, the standard unit lumber yards use for pricing and ordering.
Worked example
2in × 6in × 8ft boards, 20 pieces
Result: 160 board feet
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