Board Feet Calculator
Calculate board feet and lumber cost from thickness, width, length, and quantity.
How to Use the Board Feet Calculator
- Enter thickness in inches.
- Enter width in inches and length in feet.
- Enter quantity and price per board foot, then click Calculate.
使用场景
- •Woodworking project material estimation.
- •Lumber yard purchasing.
- •Furniture making cost planning.
公式
Formula: BF = Thickness(in) × Width(in) × Length(ft) × 12 / 144. Total BF = BF × Quantity.
常见问题
What is a board foot?
A board foot is a unit of lumber volume equal to 1 foot × 1 foot × 1 inch (144 cubic inches). It is the standard US hardwood lumber measurement.
Why is lumber measured in board feet?
Board feet allow fair pricing regardless of board dimensions, since they measure actual wood volume rather than linear length.
Does the formula change for metric measurements?
Yes — this calculator uses US imperial units (inches for thickness/width, feet for length). For metric boards, convert first: 1 inch = 25.4 mm, 1 foot = 0.3048 m.