Calculator guide
Calculate lumber volume using nominal thickness, width, length, and quantity. Use the explicitly labelled inputs below; rates, dimensions, and costs are assumptions, not live quotes.
Formula or method
Board feet = thickness in inches × width in inches × length in feet × piece count ÷ 12. Cost = board feet × price per board foot.
How to use this calculator
- Set Thickness (in). The interface starts with 2; replace it with the value for your scenario.
- Set Width (in). The interface starts with 6; replace it with the value for your scenario.
- Set Length (ft). The interface starts with 12; replace it with the value for your scenario.
- Set Pieces. The interface starts with 10; replace it with the value for your scenario.
- Set Price per board foot ($). The interface starts with 3.25; replace it with the value for your scenario.
- Compare the result with the worked example, then vary one assumption at a time so you can see what changes.
Worked example
Enter Thickness = 2 in; Width = 6 in; Length = 12 ft; Pieces = 10; Price per board foot = 3.25 $. With those assumptions, the calculator gives Total board feet: 120 bd ft; Estimated lumber cost: $390.00; Volume per piece: 12 bd ft; Formula: T(in) × W(in) × L(ft) ÷ 12. These outputs are calculated from the same implementation as the interactive tool.
Understanding the result
In this example, Total board feet is 120 bd ft. Estimated lumber cost is $390.00. Verify measurements, manufacturer coverage, packaging, local code, and site conditions. Quantity and budget estimates do not certify structural or electrical safety.
Limitations and assumptions
- Verify measurements, manufacturer coverage, packaging, local code, and site conditions. Quantity and budget estimates do not certify structural or electrical safety.
- The worked example demonstrates the stated assumptions, not a recommendation about your personal circumstances.
Frequently asked questions
Which inputs should I check first?
For Board Foot Calculator, check Thickness, Width, Length, Pieces, Price per board foot. Keep the displayed units and select options consistent; do not treat default values as recommendations.
Why might my result differ from another tool?
Compare the other tool's board foot calculator method, input units, rounding and assumptions. A matching title does not guarantee that both tools answer the same question.
Does a linked reference certify this result?
No. A reference can explain a formula or provide background for Board Foot Calculator, but it does not endorse this website, validate personal inputs or establish professional suitability.
Sources
Educational and planning information only. Sources are attributed background or formula references, not endorsements. Verify consequential decisions with an appropriate qualified professional.