Board Feet and Lumber Cost Calculator
Calculate board feet volume and total lumber cost including waste factor and markup
About this calculator
The Board Feet and Lumber Cost Calculator helps woodworkers, contractors, and DIY enthusiasts accurately calculate lumber volume in board feet and estimate total project costs. This essential tool accounts for material waste and markup percentages, ensuring you purchase the right amount of lumber while staying within budget. Whether you're planning a deck, furniture project, or construction job, this calculator eliminates guesswork and prevents costly material shortages or overages.
How to use
Enter the lumber dimensions (length, width, thickness) and quantity needed for your project. Input the price per board foot, then add your expected waste percentage and any markup. The calculator instantly provides the total board feet required and complete cost breakdown including waste and markup factors.
Frequently asked questions
What is a board foot and how is it calculated?
A board foot equals 144 cubic inches of lumber. It's calculated by multiplying length × width × thickness in inches, then dividing by 144.
What waste factor should I use for my project?
Typical waste factors range from 5-15%. Use 5-10% for experienced builders and simple projects, 10-15% for beginners or complex cuts.
Why should I include markup in my calculations?
Markup accounts for price fluctuations, delivery costs, and unexpected expenses. A 10-20% markup provides a realistic budget buffer for most projects.