Question: how many board feet are in a 2x3x10?
Answer: To convert, multiply width by length by thickness (all in inches) then divide by 144 to get board feet. In your example, a 2x3 has actual dimensions of 1 1/2 by 2 1/2, so the calculation would be 1 1/2 × 2 1/2 × 120 (assuming you meant 10 feet) divided by 144 equals 3.125 board feet.