Lumber Calculator

• •Use the Lumber Calculator when you need accurate results quickly without the risk of manual computation errors or unit conversion mistakes.
• •Use it to verify calculations made by hand or in spreadsheets — an independent check can catch errors before they lead to costly decisions.
• •Use it to explore how changing input parameters affects the output — a quick way to develop intuition and identify the most influential variables.
• •Use it when collaborating with others to ensure everyone is working from the same numbers and applying the same assumptions.

Lumber is the backbone of wood-frame construction, and board feet is the standard unit for buying and selling hardwood and dimensional lumber. One board foot equals a piece of wood 1 inch thick, 12 inches wide, and 1 foot long (144 cubic inches). This calculator determines the board footage for your project based on the number of pieces, their dimensions, and price per board foot. Whether you are framing walls, building a deck, or ordering hardwood for furniture, understanding board feet ensures accurate cost estimates and prevents ordering errors.

• !Using actual dimensions instead of nominal dimensions for dimensional lumber board foot calculations.
• !Confusing linear feet with board feet -- they are different units.
• !Not adding waste factor for defects, miscuts, and unusable short pieces.
• !Forgetting that lumber prices vary significantly by species and grade.