Board Foot Calculator
Board feet from thickness, width, and length — millimetres in, board feet out.
Board feet from thickness, width, and length. Timber here is millimetres and metres; board feet are the imperial volume used in some price lists.
Measure
Board feet
30.5
8 pieces of 25 × 150 mm × 2.4 m is 30.5 board feet (0.072 m³).
- Each
- 3.81 bf
- Volume
- 0.072 m³
- A board foot is 12 × 12 × 1 inch.
- Waste is not included. Count the pieces you will cut from, not the finished count, if offcuts matter.
Board feet30.5
Measurements stay in this browser. Nothing is uploaded.
Worked example
Eight pieces, 25 mm thick, 150 mm wide, and 2.4 m long, are about 30.5 board feet, or about 0.072 m³. Thickness and width are millimetres, length is metres.
FAQ
- What is a board foot?
- A volume of 12 × 12 × 1 inch. The formula is thickness in inches × width in inches × length in feet, divided by 12.
- Why mix millimetres and board feet?
- Timber in Australia is often measured in millimetres, while board feet are still used in some price lists. The page converts for you.
- Does it include waste?
- No. Multiply by the number of pieces you will cut from, not the finished count, if offcuts matter.