Lumber weight charts by size
Every nominal size this site covers, one row each, with the dressed size that actually determines the weight and the lightest, middle, and heaviest species that come in it. All figures are one piece at 8 ft, 12% moisture content (kiln-dried) — open a size for the full species table and other lengths and moisture conditions.
| Size | Actual (dry) | Lightest | Douglas Fir | Heaviest |
|---|---|---|---|---|
| 1×2 | 3/4″ × 1-1/2″ | 1.3 lb (N. White Cedar) | 2.1 lb | 3.2 lb (Black Locust) |
| 1×3 | 3/4″ × 2-1/2″ | 2.2 lb (N. White Cedar) | 3.5 lb | 5.4 lb (Black Locust) |
| 1×4 | 3/4″ × 3-1/2″ | 3.1 lb (N. White Cedar) | 4.9 lb | 7.5 lb (Black Locust) |
| 1×6 | 3/4″ × 5-1/2″ | 4.9 lb (N. White Cedar) | 7.8 lb | 11.8 lb (Black Locust) |
| 1×8 | 3/4″ × 7-1/4″ | 6.4 lb (N. White Cedar) | 10.2 lb | 15.6 lb (Black Locust) |
| 1×10 | 3/4″ × 9-1/4″ | 8.2 lb (N. White Cedar) | 13.1 lb | 19.9 lb (Black Locust) |
| 1×12 | 3/4″ × 11-1/4″ | 10.0 lb (N. White Cedar) | 15.9 lb | 24.2 lb (Black Locust) |
| 2×2 | 1-1/2″ × 1-1/2″ | 2.8 lb (W. Red Cedar) | 4.2 lb | 5.8 lb (White Oak) |
| 2×3 | 1-1/2″ × 2-1/2″ | 4.7 lb (W. Red Cedar) | 7.1 lb | 9.7 lb (White Oak) |
| 2×4 | 1-1/2″ × 3-1/2″ | 6.6 lb (W. Red Cedar) | 9.9 lb | 13.5 lb (White Oak) |
| 2×6 | 1-1/2″ × 5-1/2″ | 10.4 lb (W. Red Cedar) | 15.5 lb | 21.3 lb (White Oak) |
| 2×8 | 1-1/2″ × 7-1/4″ | 13.8 lb (W. Red Cedar) | 20.5 lb | 28.0 lb (White Oak) |
| 2×10 | 1-1/2″ × 9-1/4″ | 17.6 lb (W. Red Cedar) | 26.1 lb | 35.7 lb (White Oak) |
| 2×12 | 1-1/2″ × 11-1/4″ | 21.4 lb (W. Red Cedar) | 31.8 lb | 43.5 lb (White Oak) |
| 4×4 | 3-1/2″ × 3-1/2″ | 15.5 lb (W. Red Cedar) | 23.1 lb | 31.6 lb (White Oak) |
| 6×6 | 5-1/2″ × 5-1/2″ | 38.3 lb (W. Red Cedar) | 57.0 lb | 86.6 lb (Black Locust) |