Board Foot Calculator
Calculate board feet, pieces, coverage, weight and cost from lumber thickness, width and length using U.S. lumber units.
Nominal presets use common dressed sizes. For rough, reclaimed, or custom lumber, enter the actual measured size.
Calculate board feet for lumber
English lumber searches usually expect U.S. board-foot math: thickness and width in inches, length in feet, then quantity, waste and price per board foot. This calculator is built around that workflow instead of a cubic-meter table.
Board feet versus square feet
- Board feet measure lumber volume, so thickness matters.
- Square feet measure coverage area, so they are useful for decking, paneling or sheathing checks.
- Actual surfaced lumber can be smaller than nominal size; use the size your supplier quotes for ordering.
Frequently Asked Questions
Sources and References
- Board Foot CalculatorInch Calculator
- Board Foot CalculatorCalculator.net
- Board Foot CalculatorOmni Calculator
- How to Calculate Board FeetWood-Mizer
Calculations are based on the listed reference sources. Links open in a new tab.
Related Tools
Build a lumber takeoff in board feet, cubic feet, pieces, weight and cost for framing, decking, fencing and roof lumber.
Estimate log cubic feet, board feet, log scale yield, weight and value from diameter, length, count and species.
Calculate cubic feet, cubic yards and cubic meters for rooms, slabs, boxes and round columns from length, width, height or diameter.
Estimate common rafter length, roof pitch factor, rafter count, nominal lumber size, board feet and rough material cost from U.S. framing inputs.
Calculate square footage for rooms, floors, walls, lots and simple shapes, with square yards, square meters, acres, waste and cost.