Wood Quantity Calculator
Determine how many boards to purchase, including a waste allowance for cuts and defects.
Boards Needed
Waste Factor Reference
| Layout / Pattern | Recommended Waste Factor |
|---|---|
| Straight-run decking or flooring | 10% |
| Diagonal 45° pattern | 15% |
| Herringbone or chevron | 20% |
| Trim / molding work | 10% |
References & Methodology
- National Hardwood Lumber Association (NHLA) — Grading rules and measurement standards for hardwood lumber.
- Western Wood Products Association (WWPA) — Span tables and product standards for softwood lumber used in construction.
- Wood Products Council — Technical guidance on wood selection and quantity estimation for residential construction.