Calculate the weight of a wood piece from species density, dimensions, and moisture content.
Select a common wood species to auto-fill its oven-dry (0% MC) density, or choose "Custom" to enter your own value. Density values are based on the USDA Forest Products Laboratory Wood Handbook.
The density of the wood at 0% moisture content (oven-dry), in pounds per cubic foot (lb/ft3). This is the baseline density before moisture adjustment. Equivalent to specific gravity x 62.4.
lb/ft3
The length of the wood piece along the grain direction, in inches. For board feet reference: 1 board foot = 12 in x 12 in x 1 in.
inches
inches
inches
The moisture content of the wood as a percentage of oven-dry weight. Kiln-dried lumber is typically 6-8% MC, air-dried is 12-15% MC, and green/freshly cut wood can be 30-200%+ MC. Weight at MC = oven-dry weight x (1 + MC/100).
%
Results
Volume-ft3
Board Feet-BF
Oven-Dry Weight (0% MC)-lb
Weight at Specified MC-lb
Weight at Specified MC-kg
Formulas & References
Volume (ft3) = Length (in) x Width (in) x Thickness (in) / 1,728
Board Feet = Length (in) x Width (in) x Thickness (in) / 144
Oven-Dry Weight (lb) = Volume (ft3) x Oven-Dry Density (lb/ft3)
Weight at MC (lb) = Oven-Dry Weight x (1 + MC / 100)
Reference: USDA Forest Products Laboratory, Wood Handbook: Wood as an Engineering Material (FPL-GTR-282); Hoadley, R.B., Understanding Wood, 2nd Edition