Construction

Lumber Weight Calculator

Estimate lumber weight from species density, actual dimensions or board feet, piece count, moisture content, and pressure-treated condition.

Important: Informational only. Double-check any value that affects a real decision before acting on it.

Inputs

Adjust your numbers

Results update as you type.

Calculation mode (required) Use dimensions for identical boards, or board feet when your invoice already lists total BF.

Wood species (required) Choose the closest species. Select custom density if you have a supplier or lab density value.

Custom density (lb/ft³) Used only when Custom density is selected. Enter density in pounds per cubic foot.

Thickness (inches) (required) Actual thickness, not nominal. A nominal 2× board is usually 1.5 inches thick.

Width (inches) (required) Actual milled width. For example, a nominal 2×10 is about 9.25 inches wide.

Length (feet) (required) Length of one piece in feet.

Total board feet Board-feet mode only. Enter the total board feet for the lot, not per-piece BF.

Number of pieces (required) How many identical pieces are included in the total.

Moisture content (%) (required) 12% is a common dry reference; green lumber can be far higher.

Treatment / condition (required) Pressure-treated adds a broad retained-water/chemical allowance; other choices document condition without changing the entered moisture.

Weight unit (required) Choose pounds or kilograms for weight outputs.

Density unit (required) Choose the density display unit.

Results

Live answer

Total weight —

Weight per piece —

Weight per linear foot —

Board feet —

Density used —

How it works

Adds the missing weight layer on top of board-foot math: species density, moisture adjustment, pressure-treated allowance, lb/kg toggles, density visibility, and weight per linear foot for load checks.