How much does White Oak lumber weigh?
A White Oak 2×4, 8 ft weighs at 12% moisture content, kiln-dried.
46.4 lb/ft³ · 5.33 bd ft ·
White Oak is a hardwood with a basic specific gravity of 0.6 (ovendry mass over green volume, USDA Wood Handbook Table 5-3b) — 46.4 lb/ft³ once dried to 12% moisture content. Its Janka side hardness is 1,360 lbf, the 4th hardest of the 46 species on this site. Green, freshly cut moisture content runs 64% in the heartwood to 78% in the sapwood. Total shrinkage from green to ovendry runs about 16.3% by volume.
White Oak weight by size
| Size | Actual (dry) | 8 ft, 12% MC | Per foot | Green range |
|---|---|---|---|---|
| 1×2 | 3/4″ × 1-1/2″ | 2.9 lb | 0.36 lb/ft | 4.2–4.5 lb |
| 1×3 | 3/4″ × 2-1/2″ | 4.8 lb | 0.60 lb/ft | 6.8–7.4 lb |
| 1×4 | 3/4″ × 3-1/2″ | 6.8 lb | 0.85 lb/ft | 9.5–10.3 lb |
| 1×6 | 3/4″ × 5-1/2″ | 10.6 lb | 1.33 lb/ft | 15.0–16.3 lb |
| 1×8 | 3/4″ × 7-1/4″ | 14.0 lb | 1.75 lb/ft | 20.0–21.7 lb |
| 1×10 | 3/4″ × 9-1/4″ | 17.9 lb | 2.23 lb/ft | 25.3–27.5 lb |
| 1×12 | 3/4″ × 11-1/4″ | 21.7 lb | 2.72 lb/ft | 30.7–33.3 lb |
| 2×2 | 1-1/2″ × 1-1/2″ | 5.8 lb | 0.72 lb/ft | 8.3–9.0 lb |
| 2×3 | 1-1/2″ × 2-1/2″ | 9.7 lb | 1.21 lb/ft | 13.7–14.8 lb |
| 2×4 | 1-1/2″ × 3-1/2″ | 13.5 lb | 1.69 lb/ft | 19.0–20.6 lb |
| 2×6 | 1-1/2″ × 5-1/2″ | 21.3 lb | 2.66 lb/ft | 30.0–32.6 lb |
| 2×8 | 1-1/2″ × 7-1/4″ | 28.0 lb | 3.50 lb/ft | 40.0–43.4 lb |
| 2×10 | 1-1/2″ × 9-1/4″ | 35.7 lb | 4.47 lb/ft | 50.7–55.0 lb |
| 2×12 | 1-1/2″ × 11-1/4″ | 43.5 lb | 5.43 lb/ft | 61.3–66.6 lb |
| 4×4 | 3-1/2″ × 3-1/2″ | 31.6 lb | 3.95 lb/ft | 43.3–47.0 lb |
| 6×6 | 5-1/2″ × 5-1/2″ | 77.9 lb | 9.74 lb/ft | 103–112 lb |
Board-to-board variation of ±10-15% is normal even within one species and size. How these numbers are computed.
Related
- All species: wood species index
- By density: Lighter: Sugar Maple (SG 0.56) · Denser: Hickory (SG 0.64)