Board Feet Calculator
Calculate the board footage of lumber and its cost from board dimensions. This free online construction & diy calculator runs entirely in your browser — no signup, no data sent anywhere.
Inputs
Results
How It Works (Formula & Method)
One board foot is 144 cubic inches of wood — a piece 12″ × 12″ × 1″. The formula is (Thicknessin × Widthin × Lengthft) ÷ 12 per board. Multiply by the number of boards for the total, then by the price per board foot for the cost.
Worked Example
Below is a worked example using the calculator's default values. The same numbers are pre-filled in the form above so you can press Calculate and see the result without typing anything.
Inputs used:
- Thickness (in): 2
- Width (in): 6
- Length (ft): 8
- Number of Boards: 10
- Price per Board Foot ($): 3.5
With these inputs, the calculator computes the metrics shown in the Results panel. Change any value and press Calculate again to see how the result responds — the live widget and the chart both update instantly.
Frequently Asked Questions
What does the Board Feet Calculator compute?
The Board Feet Calculator takes 5 input values and returns 3 results. Calculate board feet of lumber from the thickness, width, and length of a board and the number of pieces, plus the total cost at a price per board foot.
Is my data sent to a server?
No. The Board Feet Calculator runs entirely in your browser using static JavaScript. Your inputs are never transmitted to CalculatorHive or any third party, and nothing is stored after you close the page.
Is this calculator free to use?
Yes. Every calculator on CalculatorHive is completely free. There is no signup, no paywall, and no usage limit. The site is supported by display advertising and affiliate partnerships, which are clearly labeled.
How accurate is the result?
The math is mathematically exact for the inputs you provide. Real-world accuracy depends on how accurately your inputs reflect the real situation — defaults are typical values, not guarantees.