Buying hardwood? Work out board feet and cost.
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A board foot is a volume of wood 1 inch thick, 12 inches wide and 12 inches long (144 cubic inches). Hardwood is priced by the board foot.
Board feet = thickness (in) × width (in) × length (ft) ÷ 12. Use the nominal rough-sawn thickness (4/4, 8/4…) that the lumberyard prices by.
| Thickness (inches) | 2 in |
| Width (inches) | 6 in |
| Length (feet) | 8 ft |
| Number of boards | 10 |
| Price per board foot (optional) | 0 |
| Currency | $ |
| Board feet | 80 BF |
| Per board | 8 BF |
| Volume | 6.67 ft³ · 0.189 m³ |
80 BF.
| Thickness (inches) | 1 in |
| Width (inches) | 8 in |
| Length (feet) | 10 ft |
| Number of boards | 1 |
| Price per board foot (optional) | 6 |
| Currency | $ |
| Board feet | 6.67 BF |
| Per board | 6.67 BF |
| Volume | 0.56 ft³ · 0.016 m³ |
| Cost | $40.00 |
6.67 BF; $40.00.
Multiply thickness × width in inches by length in feet and divide by 12.
5.33 board feet (nominal 2 × 4 inches × 8 ft).
Quarter-inch thickness: 4/4 is 1 inch rough, 8/4 is 2 inches.
12.