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Board Foot Calculator
Calculate lumber volume and total board feet
Formula: Board Feet (BF) = [ Thickness (in) × Width (in) × Length (ft) × Quantity ] / 12
One board foot equals 144 cubic inches of lumber volume (equivalent to a 1" thick, 12" wide, 1' long board).
One board foot equals 144 cubic inches of lumber volume (equivalent to a 1" thick, 12" wide, 1' long board).
Lumber Dimensions & Quantity
Calculation Results
⚠️ Board foot calculations are based on nominal or actual rough-sawn dimensions. Note that dressed/surfaced retail lumber (e.g., standard 2x4s) has smaller actual dimensions than nominal sizes.