Lumber Weight Calculator
Dimensional Lumber
Calculate weight of standard dimensional lumber
ft
Formula
Weight = (Thickness/12 × Width/12 × Length) × Density (lb/ft³); Board Feet = (T × W × L×12) / 144
Frequently Asked Questions
How much does a 2x4 weigh?
An 8-foot Douglas Fir 2x4 (actual dimensions 1.5" x 3.5") weighs approximately 10 lbs. Weight varies by species: SPF weighs about 8.5 lbs, while Southern Yellow Pine weighs about 10.5 lbs for the same size.
Does moisture content affect lumber weight?
Yes, significantly. Green (freshly cut) lumber can weigh 50-100% more than kiln-dried lumber. The densities used in this calculator are for air-dried lumber at approximately 12% moisture content.
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