Quick Answer
2×6 Actual Size: 1.5 in × 5.5 in (38 mm × 140 mm)
The real, finished size of a standard “2×6” is 1.5 inches by 5.5 inches, which is 38 mm by 140 mm.
“2×6” is the nominal name; after drying and planing, the board finishes smaller.
Quick dimensions
| Label | Inches | Millimeters |
|---|---|---|
| 2×6 actual size | 1.5″ × 5.5″ | 38 × 140 |
| 2×6 width | 5.5″ | 140 |
| 2×6 thickness | 1.5″ | 38 |
Also searched as: 2×6 dimensions, 2×6 actual measurement, 2×6 true size, 2×6 size in mm.
Nominal vs actual (why sizes are smaller)
“2×6” is the rough-cut name from the sawmill. After the board is dried and planed smooth, its finished, usable size becomes 1½″ × 5½″. This convention has been standard for decades in North America.
Compare to other common sizes
| Nominal | Actual (in) | Actual (mm) |
|---|---|---|
| 2×4 | 1.5 × 3.5 | 38 × 89 |
| 2×6 | 1.5 × 5.5 | 38 × 140 |
| 2×8 | 1.5 × 7.25 | 38 × 184 |
| 2×10 | 1.5 × 9.25 | 38 × 235 |
| 4×4 | 3.5 × 3.5 | 89 × 89 |
FAQ: 2×6 actual size
What is the actual size of a 2×6?
It’s 1.5 inches by 5.5 inches (38 mm × 140 mm).
How wide is a 2×6?
5.5 inches (140 mm) wide; thickness is 1.5 inches (38 mm).
Is this the same everywhere?
For standard North American softwood framing lumber, yes. Specialty lumber may vary.