Oak Weight Calculator

White oak is denser at 52 lb/ft³ compared to red oak at 47 lb/ft³, making it about 10% heavier for the same dimensions. This difference comes from white oak's tighter grain structure and higher density of wood fibers.

Yes, significantly. Green (freshly cut) oak can weigh 50-70% more than kiln-dried lumber due to water content. Most lumber is sold at 6-8% moisture content, but air-dried wood may be 12-15%, adding noticeable weight.

Multiply board feet by the density (47 lb/ft³ for red oak, 52 lb/ft³ for white oak). Board feet = (thickness in inches × width in inches × length in feet) ÷ 12. One board foot of red oak weighs approximately 3.9 pounds.

Moisture content is the most common reason. Green or improperly dried lumber can be much heavier than the standard density values. Wood density also varies slightly based on growth conditions and the specific part of the tree.

This calculator is designed for solid oak lumber. Plywood weighs less because it contains voids, glue, and sometimes other wood species in inner plies. Oak plywood typically weighs 50-60 lb per 3/4" sheet.