Wood Quantity Calculator
Wood Quantity Calculator
Determine how many boards to purchase, including a waste allowance for cuts and defects.
Project Area (sq ft)
Board Width (inches)
Board Length (feet)
Waste Factor
5% (Simple straight cuts)
10% (Standard)
15% (Complex or diagonal layout)
20% (Herringbone / chevron)
Calculate Quantity
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.
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References
- 10 CFR Part 431 — Energy Efficiency Standards for Certain Commercial and Industrial Equipment
- UF/IFAS Orange County Extension — Water Quality and Aquatic Systems
- ADA Standards for Accessible Design §402 — Ground and Floor Surfaces
- ADA Standards for Accessible Design — Section 1009, Swimming Pools, Wading Pools, and Spas
- ADA Standards for Accessible Design, Section 242 — Swimming Pools, Wading Pools, and Spas
- 2010 ADA Standards for Accessible Design — §242 Swimming Pools (U.S. Department of Justice)
- 2010 ADA Standards for Accessible Design — §242 Swimming Pools, Wading Pools, and Spas
- ADA Standards for Accessible Design § 242 — Swimming Pools