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Lumber pricing calculator

The price tag says "$5/BF rough" — but by the time you've paid for surfacing, grade premium and species markup, you're paying $9/BF. This calculator shows the real landed cost per board foot including S2S/S4S/SLR upcharges.

Calculator

Why "rough" doesn't mean "cheap"

Rough lumber is the cheapest per BF at the lumber yard, but you'll spend an hour surfacing it, lose 1/4″ per board to planing, and have to deal with imperfect stock. Surfaced lumber costs more per BF but arrives ready to use. The right answer depends on your shop — if you have a planer/jointer and time, rough wins; if you don't, surfaced is cheaper when you count your time.

Why grade matters more than you think

FAS (Firsts and Seconds) is the top grade: long, wide, clear boards. #2 Common has more knots and shorter pieces; you might need 25% more BF for the same project because of unusable areas. The calculator's grade discount is approximate; real-world loss depends on the project.

The hidden costs

These are not in the calculator:

Limitations

Frequently asked questions

Is it cheaper to buy rough or surfaced?

Rough is cheaper per BF if you have the equipment and time. Surfaced is cheaper per usable piece if you don't. As a hobbyist building one project a month, surfaced usually wins once you count your time.

Walnut at $14/BF feels expensive. Is it worth it?

For one show-piece project you'll see every day, yes. For utility projects that get painted or hidden, no — poplar or maple perform identically at a third of the price.

Can I negotiate with the lumber yard?

Sometimes — most yards have some flexibility on quantity, mixed-species orders, or "pick-of-the-pile" boards. Be polite, be a regular customer, and ask. The worst they can say is no.

How do I use Lumber pricing calculator step by step without mistakes?Follow the order given in the usage section: Cost per board foot including S2S/S4S/SLR upcharges, species premium, and grade premium. Useful for small-shop quoting. The step-by-step part matters less than the unit check that sits inside it. Confirm every unit matches the thing you are actually trying to measure before you press calculate - that single check catches more wrong answers than any other habit, and it costs about ten seconds.
What are the common mistakes when using Lumber pricing calculator?Most common mistakes come down to four habits: entering 20 when the field expects 0.2 because the field is a percentage; leaving a field blank and accepting the default without checking what it stands for; changing one input and reading a result that was calculated before the change; and quoting the output as an exact figure when the page describes it as a reference estimate. Press calculate again after any edit, and treat the number as a reference point rather than a final answer.
How do I read the result from Lumber pricing calculator?Read the final figure first, then come back to this section for the conditions behind it: Effective BF price is what you're really paying per BF after grade & surfacing. Total cost is the as-purchased price (with discount and tax). Premium % shows how much the upgrades added over rough lumber. Keep two things apart: the number itself, which comes from the values you typed, and the assumptions it depends on, which decide whether that number is meaningful. The page sets out what a higher or lower result means for your case, so check that direction as well as the magnitude.