Lumber Calculator
Enter the number of pieces, length per piece, and price per foot and this lumber calculator returns the total linear feet (pieces times length) and the estimated cost (linear feet times price).
What this calculator does
The Lumber Calculator estimates your result instantly from the values you enter, using standard construction & home formulas. Enter the number of pieces, length per piece, and price per foot and this lumber calculator returns the total linear feet (pieces times length) and the estimated cost (linear feet times price). Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate rather than a certified or official figure.
Result
About Lumber Calculator
The Lumber Calculator multiplies the number of pieces by the length per piece to give total linear feet, then multiplies by your price per foot for an estimated cost. Use it to size and price a lumber order quickly.
Formula & Mathematical Calculation
Total Linear Feet = f(Number of Pieces, Length per Piece (ft), Price per Foot ($))
Calculated according to standard construction formulas implemented in the calculator core.
Calculation Example
For 20 pieces at 8 ft each and a price of $0.85 per foot, the calculator gives 20 x 8 = 160 linear feet and 160 x 0.85 = 136. The Total Linear Feet box shows 160 ft and the Estimated Cost box shows $136.
Key Benefits
- Multiplies piece count by length to give total linear feet
- Multiplies linear feet by your price per foot for an estimated cost
- Treats the number of pieces as a whole number so counts stay realistic
How to Use this Calculator
-
Enter the number of pieces
Type how many pieces of lumber you need in the Number of Pieces field. -
Enter length and price
Fill in the Length per Piece (ft) and Price per Foot ($) fields. -
Calculate
Click Calculate to read the Total Linear Feet and Estimated Cost boxes.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Any rate or interval you enter is assumed to hold for the whole period unless the form asks for it separately.
- Results use standard published formulas and account only for the values entered above.
- Rounding is applied for display; the underlying calculation uses your full precision.
- Results are returned in the same units you enter, unless the tool states the output unit.
What it does not cover
- Lumber Calculator produces a calculated result for reference and learning, not a certified or official measurement.
- Real-world outcomes differ when tolerances, rounding rules or local standards apply.
- Definitions and standards vary by region and change over time; verify the convention that applies to your case.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For work where the result carries real consequences, confirm it against an authoritative source.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.