Lumber Calculator - Calculate Lumber Needed
Calculate lumber for framing or construction. Free calculator estimates board feet.
Lumber Calculator: Calculate lumber needed for framing.
Lumber Required
Studs (2×4)
16
Plates (2×4)
2
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Lumber Calculations
Determine size and quantity needed. Board feet = (thickness × width × length) / 12. Account for spacing (16 or 24 inches OC). Add 10% waste.
Frequently Asked Questions
Calculate lumber needed?
Determine dimensions, calculate pieces needed, account for spacing. Add 10% waste.
What is board foot?
1 ft × 1 ft × 1 inch thick. Formula: (T × W × L) / 12. 2×6×10 = 10 board feet.
Lumber cost?
2×4: $3-8. 2×6: $6-12. 2×8: $10-18. Plywood: $30-60/sheet. Prices vary by market.
Nominal vs actual size?
Nominal is name (2×4). Actual is smaller (1.5×3.5) after drying/planing.
2x4s for wall?
Wall length / 16 + 1 for studs. Add 2 plates. 12 ft wall = 10 studs + 2 plates.
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