About
About the Board Foot Calculator & Nathan Cole
This site exists because I watched too many people overpay at the lumber counter for one reason: they didn't know how board feet work, and the person selling did. The calculator and guides here are the cheat sheet I wish every buyer walked in with.
Nathan Cole, who writes this site
I'm on the buying side of the lumber trade. I buy and price hardwood — walnut, oak, maple, and cherry — which is where I learned how surface measure, grading, and quarter thickness really move a price. The rules aren't a scam, but they reward whoever understands them.
The same work runs through planning materials for furniture, cabinet, and millwork jobs, where estimating board feet and holding waste down is the difference between an on-budget job and an expensive one. Everything on this site comes from that side of the counter: board foot estimation, procurement, and material optimization.
How I built the calculator
Every formula here mirrors how lumber is actually sold: nominal sizing for softwood, surface measure with NHLA quarter rounding for hardwood, and Doyle, Scribner, and International ¼ for logs. I didn't simplify the math to make it look clean — I matched it to the invoice you'll get, because a calculator that disagrees with the yard is worse than useless. That's also why I wrote why calculators disagree.
How the numbers get checked
BuildCalcHub is the platform name that shows up on the legal pages; the writing, checking and day-to-day maintenance of this site are mine. Every chart is worked against published grading rules and supplier price sheets before it goes up, and figures are revised when the underlying standards or typical market prices change. Prices shown are planning estimates, not quotes — they move with the market.
What we won't do
We don't post fake reviews or invent star ratings, and we don't bury the real number behind a hidden waste markup. The main calculator shows net board feet first and lets you add waste deliberately. If something here is wrong, I want to fix it — reach me on the contact page.
Start here
New to board feet? Begin with what is a board foot and the step-by-step how to calculate board feet. Heading to the yard today? Grab the cheat sheet and the buyer routine in how to buy lumber by the board foot.