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Calcolatore BD FT
Standard Lumber Calculator

Calcolatore Piedi Tavolari per Legname

Calculate board feet for standard dimensional lumber.

Lumber Calculator

Select a common lumber size or enter custom dimensions

Actual dimension (not nominal)

Remember: Nominal sizes (like 2×6) are larger than actual dimensions. A 2×6 actually measures 1.5" × 5.5" after drying and planing.

1× Boards

Actual 3/4" thick. Used for trim, shelving, and light projects.

2× Lumber

Actual 1.5" thick. Standard framing lumber for walls, floors, and decks.

4× Posts

Actual 3.5" thick. Used for posts, beams, and heavy structural work.

6× Timbers

Actual 5.5" thick. Heavy timbers for posts, beams, and landscaping.

Domande frequenti

What's the difference between nominal and actual size?
Nominal is the rough-cut size before drying and planing. Actual is the finished dimension. A 2×4 nominally is 2"×4" but measures 1.5"×3.5" actual.
Should I use nominal or actual dimensions?
Use actual dimensions for accurate board foot calculations. Our presets automatically use actual sizes for common lumber.
How many board feet in a typical 2×4×8?
Using actual dimensions: (1.5 × 3.5 × 8) ÷ 12 = 3.5 board feet per 8-foot 2×4.

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