Lumber Weight Calculator
Estimate lumber weight, total delivery load, board feet and material cost from actual board dimensions, length, quantity and density.
Default project preview
626 lb
Weight per piece
24.1 lb
Board-foot equivalent
214.5 bd ft
Purchased pieces
26
Total volume
17.88 ft³
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Required piece count
Enter this project assumption in pieces. The current imperial default is 24 pieces. Minimum: 1.
Board length
Enter this project assumption in ft. The current imperial default is 12 ft.
Actual board width
Enter this project assumption in in. The current imperial default is 5.5 in.
Actual board thickness
Enter this project assumption in in. The current imperial default is 1.5 in.
Wood density
Enter this project assumption in lb/ft³. The current imperial default is 35 lb/ft³.
Extra piece allowance
Enter this project assumption in %. The current imperial default is 5 %. Minimum: 0. Maximum: 50.
Price per piece
Enter this project assumption in per piece. The current imperial default is 15 per piece. Minimum: 0.
How to read the outputs
Weight per piece
from actual dimensions. Default preview: 24.1 lb.
Board-foot equivalent
volume comparison. Default preview: 214.5 bd ft.
Purchased pieces
5% extra. Default preview: 26.
Total volume
solid wood volume. Default preview: 17.88 ft³.
Material allowance
pieces × entered price. Default preview: $390.00.
Density assumption
species and moisture dependent. Default preview: 35 lb/ft³.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Piece volume = length × actual width × actual thickness. Piece weight = volume × density. Quantity is rounded up after the extra allowance, then total weight, board feet and cost are calculated.
BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Lumber Weight Calculator questions
Why use actual rather than nominal board dimensions?+
Nominal names such as 2×6 are usually larger than the finished dimensions used to calculate volume.
How does moisture affect lumber weight?+
Wet or pressure-treated lumber can weigh materially more than dry lumber of the same size.
Is board foot a weight unit?+
No. A board foot is a volume unit; weight still depends on density.