Quickly calculate lumber volume with our board foot calculator. Save money, plan better, and feel confident in your woodworking or construction projects.
You’ve got this—just follow these steps to measure like a pro.
A board foot is a unit of volume specifically used to measure lumber. One board foot equals 144 cubic inches of wood.
Use this formula:
Board Feet = (Thickness in inches × Width in inches × Length in feet) ÷ 144This formula comes from the definition of a board foot: a volume of 144 cubic inches. Lumber thickness and width are in inches; length is in feet.
Convert all metric measurements before applying the board foot formula.
A woodworker is building a table using 6 boards, each 1.5" × 8" × 6'.
Each board: (1.5 × 8 × 6) ÷ 144 = 0.5 board feet
Total: 6 × 0.5 = 3 board feetA contractor needs 15 planks, each 2" × 10" × 12'.
Each: (2 × 10 × 12) ÷ 144 = 1.67 board feet
Total: 15 × 1.67 = 25.05 board feetStart calculating your board feet now and take control of your project costs with confidence!
| Thickness (in) | Width (in) | Length (ft) | Quantity | Board Feet |
|---|---|---|---|---|
| 1 | 6 | 8 | 1 | 4.00 |
| 2 | 4 | 10 | 1 | 5.56 |
| 1.5 | 3.5 | 6 | 4 | 8.75 |
| 2 | 10 | 12 | 15 | 300.00 |
| 1.25 | 5 | 0.75 | 2 | 0.65 |
| 1.5 | 6 | 5.5 | 3 | 10.31 |