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Calculate board feet from lumber dimensions with cost per board foot estimate.
A lumber calculator converts dimensional lumber sizes into board feet and estimates total cost based on price per board foot.
| Nominal | Actual |
|---|---|
| 2 × 4 | 1.5″ × 3.5″ |
| 2 × 6 | 1.5″ × 5.5″ |
| 2 × 8 | 1.5″ × 7.25″ |
| 2 × 10 | 1.5″ × 9.25″ |
| 2 × 12 | 1.5″ × 11.25″ |
| 4 × 4 | 3.5″ × 3.5″ |
Formula
Board Feet = (Thickness × Width × Length) ÷ 12 × QuantityThickness = board thickness in inches
Width = board width in inches
Length = board length in feet
Worked Example
10 pieces of 2×6×8 lumber at $5/BF
Did you know? The board foot measurement system has been used in North America since the early 1800s and remains the standard pricing unit for hardwood lumber (source: National Hardwood Lumber Association).
Sources
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