Lumber Calculator
Calculate board feet and cost for your lumber: length, width, thickness, count and price per board foot. Instant project pricing.
About this tool
Count board feet and total cost for any lumber order: enter piece count, length, width, thickness and the price per board foot.
Woodworkers price projects in feet, not pieces. Convert any plan into real numbers — and a real quote — before the sawdust starts, so your material list never surprises you at the counter.
FAQ
What is a board foot?
Volume of lumber: 1 bf = 144 cubic inches. A 1x6 board 8 ft long is 4 board feet.
Why buy by board foot?
Hardwoods are priced per board foot, not per board — this is how lumber yards quote and how you compare grades.
Should I add waste?
Yes — rough milled lumber loses 10-15% to squaring and defects. Add it before ordering.