2x8 Actual Size
Find the actual thickness, width, and metric dimensions of a standard 2x8 lumber board.
2x8 Actual Dimensions
| Measurement | Actual Size |
|---|---|
| Nominal Size | 2 × 8 inches |
| Actual Thickness | 1.5 inches |
| Actual Width | 7.25 inches |
| Metric Size | 38 × 184 mm |
What Is the Actual Size of a 2x8?
A commonly sold dry 2x8 board has an actual finished size of approximately 1.5 inches thick × 7.25 inches wide.
The name 2x8 refers to the nominal size of the lumber rather than its final finished dimensions.
Why Is a 2x8 Not Actually 2 by 8 Inches?
Lumber is typically cut larger than its final dimensions and then dried and surfaced. Planing and finishing reduce the thickness and width, which is why a nominal 2x8 is commonly about 1.5 × 7.25 inches after finishing.
2x8 Size in Millimeters
The commonly referenced metric dimensions are approximately 38 × 184 mm.
Actual dimensions can vary depending on lumber grade, moisture condition, manufacturer, and product specifications.
Common Uses for 2x8 Lumber
2x8 boards are commonly used for framing, floor joists, roof framing, decks, beams, and other structural or construction applications where a wider board is useful.
Related Lumber Sizes
FAQ
How thick is a 2x8?
A commonly sold dry 2x8 is about 1.5 inches thick.
How wide is a 2x8?
A commonly sold dry 2x8 is about 7.25 inches wide.
What is a 2x8 in millimeters?
The commonly referenced metric size is approximately 38 × 184 mm.