Board Foot Price Calculator
Estimate lumber order cost with allowance and tax shown separately.
Currency boundary: amounts are displayed in the currency you select. No exchange rate or conversion is performed; the typed price must already be in that currency.
Base quantity100 BF
Allowance quantity10 BF
Order quantity110 BF
Material subtotal (USD)$467.50
Tax (USD)$38.57
Total (USD)$506.07
Calculations run locally in your browser. Inputs are not transmitted or attached to analytics.
Separate quantity decisions from money
The price tool starts with an agreed board-foot quantity. Allowance increases the order quantity; price per board foot is then applied to that larger quantity; optional sales tax is calculated from the material subtotal. Base quantity, allowance quantity, order quantity, subtotal, tax and total remain separate so a buyer can see exactly which percentage changed which amount.
Select a display currency and enter a price already denominated in that currency. The selector changes formatting only. It does not fetch exchange rates or convert a USD quote into CAD, AUD, NZD, GBP or EUR. Retain the currency code on any copied commercial note.
Worked example in USD
For 100 BF at USD 4.25 per BF with a 10% allowance, the tool adds 10 BF and prices 110 BF. The material subtotal is USD 467.50. At 8.25% tax, tax is USD 38.56875 and the displayed total is USD 506.07. The unrounded tax remains part of the internal total before currency formatting.
Allowance is not a grade or yield prediction
An allowance is a planning input chosen by the user. It may cover cutting loss, defect selection, matching or uncertainty, but the calculator cannot decide the right percentage. Do not describe the added amount as measured lumber. Delivery, minimum-order fees, surfacing, waste disposal and discounts are outside the model unless separately added to a commercial record.
Validation and commercial checks
Board feet must be positive. Price, allowance and tax must be finite and non-negative; tax is restricted to 0–100%. Extreme calculations that overflow are rejected by the calculation layer. Confirm whether the supplier taxes delivery or services, which rounding stage the invoice uses, and whether price is quoted per BF, per MBF, per piece or per linear foot before comparing totals.
Questions about this topic
Does changing currency convert the price?
No. It only labels and formats values; enter the price in the selected currency.
Should allowance be taxed?
The model taxes the full material subtotal. Check the applicable invoice and local rules for the real transaction.
Can I use a live lumber price?
The site has no live price feed. Enter a dated supplier rate and keep its source.
Related BoardFoot Bench pages
Method and content reviewed 3 September 2026.