Board Foot Calculator
Calculate board feet and the cost of lumber. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Total board feet
80
- Per board
- 8
- Cubic metres
- 0.1888
- Total cost
- 360.00
Good to know: bf = thickness × width × length ÷ 12
Please note: Estimates only. Measure your actual space, buy a little extra, and check product labels, safety requirements and local building rules. Do not rely on this for structural or safety-critical work.
About this tool
Formula
bf = thickness × width × length ÷ 12
Questions people ask
What is a board foot?
A volume of wood 1 inch thick, 12 inches wide and 12 inches long: 144 cubic inches.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
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