Lumber Weight

How much does a Redwood 2×4 weigh?

A Redwood 2×4, 8 ft weighs 8.2 lb (3.7 kg) at 12% moisture content, kiln-dried.

28.3 lb/ft³ · 5.33 bd ft ·

The answer above uses the actual dressed size — a nominal 2×4 of Redwood measures 1-1/2″ × 3-1/2″ once surfaced dry (PS 20-25) — and the species' basic specific gravity of 0.38 from the USDA Wood Handbook. At 12% moisture content that works out to 28.3 lb/ft³, or 1.0 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).

Redwood 2×4 weight by length

Weight of one Redwood 2×4, by length and moisture condition
Length12% MC15% MC19% MC (KD max)GreenBoard feet
6 ft 6.2 lb 6.3 lb 6.4 lb 10.2–17.1 lb 4.00 bd ft
8 ft 8.2 lb 8.4 lb 8.5 lb 13.6–22.7 lb 5.33 bd ft
10 ft 10.3 lb 10.5 lb 10.7 lb 17.1–28.4 lb 6.67 bd ft
12 ft 12.4 lb 12.6 lb 12.8 lb 20.5–34.1 lb 8.00 bd ft
14 ft 14.4 lb 14.7 lb 15.0 lb 23.9–39.8 lb 9.33 bd ft
16 ft 16.5 lb 16.8 lb 17.1 lb 27.3–45.5 lb 10.7 bd ft
20 ft 20.6 lb 20.9 lb 21.4 lb 34.1–56.9 lb 13.3 bd ft

Green weights show the heartwood-to-sapwood moisture range (86%–210% 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.

Related