🪚Lumber Calculator
Build a lumber list and see total pieces, linear feet, board feet and cost.
Your lumber list
Your list adds up to
29 pieces
260 linear ft · 201.3 board ft · about $185 (estimate — prices vary by location)
pieces
29
linear ft
260
board ft
201.3
cost est.
$185
🛒 Shopping list
- 2x4 lumber176 linear ft
- 2x6 lumber84 linear ft
Sizes are nominal — a 2×4 is really 1½ × 3½ inches — but stores price and count them by the nominal size.
How it works
For each row: pieces = quantity × (1 + waste). Linear feet = pieces × length. Board feet = nominal thickness × nominal width × length ÷ 12 × pieces. Cost uses a price per linear foot for each size, editable in the shopping list.
Worked example
20 × 2×4 at 8 ft and 6 × 2×6 at 12 ft with 10% waste rounds up to 22 + 7 = 29 pieces, 260 linear feet and 201.3 board feet.
Questions people ask
A 2×4 is really 1½ × 3½ in after drying and planing, but it's sold and counted as a 2×4.
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Last updated October 8, 2026. These results are friendly estimates to help you plan — always double-check before buying or making big decisions.