Lumber Weight

How much does a W. Red Cedar 2×4 weigh?

A W. Red Cedar 2×4, 8 ft weighs 6.6 lb (3.0 kg) at 12% moisture content, kiln-dried.

22.8 lb/ft³ · 5.33 bd ft ·

The answer above uses the actual dressed size — a nominal 2×4 of Western Red Cedar measures 1-1/2″ × 3-1/2″ once surfaced dry (PS 20-25) — and the species' basic specific gravity of 0.31 from the USDA Wood Handbook. At 12% moisture content that works out to 22.8 lb/ft³, or 0.8 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).

W. Red Cedar 2×4 weight by length

Weight of one W. Red Cedar 2×4, by length and moisture condition
Length12% MC15% MC19% MC (KD max)GreenBoard feet
6 ft 5.0 lb 5.1 lb 5.2 lb 7.1–15.7 lb 4.00 bd ft
8 ft 6.6 lb 6.8 lb 6.9 lb 9.5–20.9 lb 5.33 bd ft
10 ft 8.3 lb 8.5 lb 8.7 lb 11.8–26.1 lb 6.67 bd ft
12 ft 10.0 lb 10.2 lb 10.4 lb 14.2–31.3 lb 8.00 bd ft
14 ft 11.6 lb 11.8 lb 12.1 lb 16.5–36.6 lb 9.33 bd ft
16 ft 13.3 lb 13.5 lb 13.9 lb 18.9–41.8 lb 10.7 bd ft
20 ft 16.6 lb 16.9 lb 17.3 lb 23.6–52.2 lb 13.3 bd ft

Green weights show the heartwood-to-sapwood moisture range (58%–249% 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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