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Construction & DIYGenerated accuracy model review: 2026-05-06
Board Foot (Lumber) accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- **Board Feet = (Thickness in inches × Width in inches × Length in FEET) / 12** Alternatively, if all dimensions are in inches: (T × W × L) / 144.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Thickness: 1 in
- Board Width: 6 in
- Board Length: 8 ft
- Quantity: 10
Expected outputs
- Total Board Feet: 40 BF
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- Thickness and width are entered in inches, while length is entered in feet.
- All entered dimensions and quantity should be positive numbers.
- The calculation gives gross lumber volume and does not deduct defects, kerf loss, or milling waste.
Unit handling
- Thickness accepts values in in.
- Board Width accepts values in in.
- Board Length accepts values in ft.
- Quantity accepts numeric values.
- Total Board Feet is displayed in BF.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current board-foot-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Board Foot (Lumber).
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.