Calculate board feet, total lumber volume, and cost for any woodworking or construction project. Supports all hardwood and softwood species with current pricing.
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5.33 BF per board x 10 boards
| BF per Board | 5.33 |
|---|---|
| Total Board Feet | 53.33 |
| Linear Feet | 80 |
| Square Feet | 53.33 |
| Cubic Feet | 4.44 |
| Est. Weight | 187 lbs |
| Cost (@ $7.00/BF) | $373.33 |
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A board foot (BF) is the standard unit of measure for hardwood lumber volume. One board foot equals a piece of wood 12 inches wide, 12 inches long, and 1 inch thick, totaling 144 cubic inches. The board foot system allows fair pricing regardless of board dimensions because you pay for the actual volume of wood rather than for standardized pieces.
The calculation formula is simple: Thickness (inches) x Width (inches) x Length (feet) / 12. A board that is 1 inch thick, 8 inches wide, and 10 feet long contains (1 x 8 x 10) / 12 = 6.67 board feet. For lumber thicker than 1 inch, each additional quarter inch adds proportionally. A 6/4 (1.5-inch) board contains 50 percent more board feet than the same size in 4/4 (1-inch).
Hardwood prices per board foot vary dramatically by species, grade, and region. As of 2026, typical retail prices are: poplar $3.50 to $5.00, soft maple $5.00 to $7.50, red oak $5.00 to $8.00, white oak $6.00 to $10.00, hard maple $5.50 to $9.00, cherry $7.00 to $12.00, walnut $10.00 to $18.00, and mahogany $12.00 to $22.00. Wholesale prices from mills are typically 30 to 50 percent less, but minimum orders of 100 to 500 board feet apply.
Lumber grade has a significant impact on pricing. FAS (First and Seconds) grade commands a 20 to 40 percent premium over #1 Common. However, for many woodworking projects, #1 Common provides adequate clear wood after cutting around defects. A skilled woodworker can often get 65 to 80 percent usable material from #1 Common boards by working around knots and sapwood, making it the best value for most projects.
Converting a project cut list to a lumber purchase order requires accounting for waste, defects, and saw kerf. Start by calculating the total board feet in your finished parts. Then add 30 to 50 percent for waste: 30 percent for simple projects with rectangular parts, 40 percent for projects with curved or angled parts, and 50 percent for projects using highly figured or matched grain pieces. This waste factor accounts for saw kerf (approximately 1/8 inch per cut), jointing and planing (removes 1/4 to 3/8 inch total from thickness and 1/4 inch from each edge), squaring rough ends (lose 1 to 3 inches per end), and cutting around defects.
For example, a dining table project requiring 40 board feet of finished walnut should start with approximately 52 to 60 board feet of rough lumber (40 x 1.3 to 1.5). At $14 per board foot retail, that is $728 to $840 in lumber. Buying from a wholesale mill at $9 per board foot drops the cost to $468 to $540 but requires buying a minimum quantity. Planning purchases carefully and combining orders with other woodworkers can access wholesale pricing for smaller projects.
When buying hardwood, always inspect boards in person if possible. Look for straight grain, minimal sapwood (unless desired), and the absence of internal stresses that cause warping after cutting. Let rough lumber acclimate to your shop for 1 to 2 weeks before milling, as moisture content differences between the mill and your workshop can cause warping. Ideal workshop moisture content for furniture-grade work is 6 to 8 percent. Purchase a moisture meter ($25 to $50 for a pin-type meter) and check every board before buying and again before milling.
Lumber dealers price wood in a variety of units: per board foot, per linear foot, per piece, or per bundle. Without converting to a common unit, price comparisons are meaningless. Board feet are the universal currency of hardwood lumber pricing because they measure actual wood volume rather than arbitrary piece counts or lengths. A dealer charging $8 per linear foot for 8/4 (2-inch) oak and another charging $12 per board foot are offering identical pricing — you simply cannot know without the conversion.
The conversion is straightforward: price per board foot = (price per linear foot x 12) / (thickness in inches x width in inches). A 2-inch thick, 6-inch wide board priced at $4 per linear foot equals (4 x 12) / (2 x 6) = $4 per board foot. Memorizing this formula allows instant mental price comparisons at any lumber yard, sawmill, or online retailer.
Retail lumber yards (Woodcraft, Rockler, local hardwood dealers) offer the widest selection, pre-surfaced lumber, and knowledgeable staff. The convenience comes at a price premium of 40-80% over wholesale. In 2026, retail red oak runs $7-$10 per board foot; wholesale pricing for the same grade runs $4-$6 per board foot. For a 50-board-foot project, the difference is $150-$200.
Wholesale hardwood dealers and lumber yards cater to furniture makers and cabinet shops. They sell rough lumber in random widths and lengths (RWL), requiring you to mill the boards yourself. Minimum orders typically run 50-200 board feet. The selection is far wider — 20-30 species vs 8-12 at retail stores — and the quality is often superior because the stock turns over faster and is properly dried.
Sawmills offer the lowest prices, often 50-70% less than retail. Local sawmills can cut custom dimensions, provide air-dried lumber unavailable elsewhere, and offer species like local walnut or cherry that retail stores never stock. The trade-off: irregular sizes, unknown moisture content (requiring a moisture meter), and variable quality. For experienced woodworkers, buying direct from a sawmill is the best value available.
Hardwood lumber is graded by the National Hardwood Lumber Association (NHLA) based on the percentage of clear (defect-free) wood. FAS (First and Seconds) requires 83-100% clear wood and commands the highest prices — 30-50% more than lower grades. Select grade (one-face FAS) is nearly equivalent in appearance for projects where only one face shows, at 15-25% less than FAS.
#1 Common (66% clear) is often the best value for furniture projects because the yield of usable pieces is high enough for most applications, and the price discount is significant. A walnut project requiring 40 board feet of finished wood might need 52 board feet of FAS at $18/BF ($936) or 58 board feet of #1 Common at $13/BF ($754) — a $182 saving. The extra boards needed to cut around defects cost less than the grade premium.
#2 Common (50% clear) is suited for rustic furniture, painted projects, and small parts. The extra waste at this grade erases most of the price advantage for projects requiring longer, wider boards. For projects with many small parts (eg. chair spindles, cabinet door frames), #2 Common can be surprisingly economical with careful cutting.
Online hardwood retailers (Bell Forest Products, Certainly Wood, Woodfinder-listed dealers) offer competitive pricing with the convenience of home delivery. Shipping adds $30-$80 for most orders, making small orders uneconomical. Orders over 50-100 board feet typically offset shipping costs versus local retail. Watch for hidden costs: some online dealers list prices per piece rather than per board foot, and the actual board foot count may vary from nominal dimensions. Always request a board-by-board inventory for large orders.
Price comparison sites and lumber exchanges like Woodfinder.com list hundreds of dealers by species and region. Getting three quotes for any purchase over $200 is worth the time investment. Prices for the same species and grade routinely vary by 30-40% between dealers in the same region, making shopping around the highest-value use of your pre-purchase time.
A board foot is a volume measurement for lumber equal to 12 inches x 12 inches x 1 inch, or 144 cubic inches. It is the standard unit for pricing hardwood and specialty lumber. One board foot equals 1/12 of a cubic foot.
Board Feet = (Thickness in inches x Width in inches x Length in feet) / 12. For example, a 2x6x8 board is (2 x 6 x 8) / 12 = 8 board feet. Use nominal dimensions (the lumber label size, not actual measured size) for the calculation.
In 2026, common hardwood prices per board foot are: red oak $5 to $8, white oak $6 to $10, maple $5 to $9, cherry $7 to $12, walnut $10 to $18, and mahogany $12 to $22. Prices vary by grade (FAS, Select, #1 Common), width, and region.
Nominal size is the name used to describe the board (2x4, 2x6). Actual size is the measured dimension after drying and planing. A nominal 2x4 actually measures 1.5 x 3.5 inches. Board foot calculations use nominal dimensions for standard lumber.
A 2x4x8 contains (2 x 4 x 8) / 12 = 5.33 board feet. A 2x6x8 contains 8 board feet. A 2x10x12 contains 20 board feet. A 1x6x8 contains 4 board feet.
A typical sawlog produces about 200 to 500 board feet of lumber. A large hardwood tree with an 18-inch diameter at breast height yields approximately 200 board feet. A 24-inch tree yields about 400 board feet. Actual yield depends on species, log quality, and sawing method.
FAS (First and Seconds) is the highest grade with 83-100 percent clear wood, best for furniture and trim. Select is similar but graded from one face only. #1 Common (66 percent clear) is good for most projects. #2 Common (50 percent clear) is economical for rustic projects and smaller parts.
Hardwood is sold by the board foot at random widths and lengths (RWL). You buy a specific number of board feet and receive boards of varying sizes. Softwood (construction lumber) is sold by the piece at standard dimensions. Specialty retailers may offer both pricing methods.
Board Feet = T(in) x W(in) x L(ft) / 12
Total BF = BF per board x quantity
Cost = Total BF x price per board foot
Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.
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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.