Lumber Weight

How much does a Longleaf Pine 2×4 weigh?

A Longleaf Pine 2×4, 8 ft weighs 12.0 lb (5.5 kg) at 12% moisture content, kiln-dried.

41.3 lb/ft³ · 5.33 bd ft ·

The answer above uses the actual dressed size — a nominal 2×4 of Longleaf Pine measures 1-1/2″ × 3-1/2″ once surfaced dry (PS 20-25) — and the species' basic specific gravity of 0.54 from the USDA Wood Handbook. At 12% moisture content that works out to 41.3 lb/ft³, or 1.5 lb per linear foot.

2×4 nominal vs 1-1/2″ × 3-1/2″ actual
Dashed: nominal 2×4. Solid: actual dressed size, surfaced dry (PS 20-25).

Longleaf Pine 2×4 weight by length

Weight of one Longleaf Pine 2×4, by length and moisture condition
Length12% MC15% MC19% MC (KD max)GreenBoard feet
6 ft 9.0 lb 9.1 lb 9.3 lb 10.2–16.1 lb 4.00 bd ft
8 ft 12.0 lb 12.2 lb 12.3 lb 13.7–21.5 lb 5.33 bd ft
10 ft 15.1 lb 15.2 lb 15.4 lb 17.1–26.8 lb 6.67 bd ft
12 ft 18.1 lb 18.3 lb 18.5 lb 20.5–32.2 lb 8.00 bd ft
14 ft 21.1 lb 21.3 lb 21.6 lb 23.9–37.6 lb 9.33 bd ft
16 ft 24.1 lb 24.4 lb 24.7 lb 27.3–43.0 lb 10.7 bd ft
20 ft 30.1 lb 30.4 lb 30.9 lb 34.1–53.7 lb 13.3 bd ft

Green weights show the heartwood-to-sapwood moisture range (31%–106% MC for this species) — a fresh-cut board lands somewhere inside it. Board feet use nominal dimensions, as lumber is priced; weight uses actual dimensions. Expect ±10-15% piece-to-piece variation in any stack. How these are computed.

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