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Deck Board Layout Estimator
Plan identical straight deck-board rows and stock pieces for a rectangular deck.
Deck length along boards (m), Deck width across boards (m), Board face width (mm), Side gap (mm), Stock board length (m)
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the labelled values using the displayed units and explicit assumptions.
- Choose Calculate result and review the complete report and any undefined or no-solution states.
- Choose Download result to save the complete JSON. Reset clears the result and restores example controls.
Examples
Deck length along boards (m): 5
Deck width across boards (m): 3
Board face width (mm): 140
Side gap (mm): 5
Stock board length (m): 3
Limitations
- Positive deck length/width m,board width mm,stock board length m;gap mm nonnegative. Parallel boards along deck length;last row trimmed,stock pieces spliced with zero end gaps and no cross-row offcut reuse. Counts use exact decimal division. No joists,fasteners,structure,expansion specification or code assessment. A fixed-gap layout whose final board would have zero/negative width is refused;adjust width/gap.
- Scalar controls accept explicit finite decimal syntax;positive values normally1e-12–1e12,nonnegative0–1e12 unless a narrower range is stated. JSON numeric rows use finite IEEE754 values within their stated bounds. Derived counts above1billion and nonfinite results refuse. Combined input<=400000UTF8 bytes;complete JSON<=4MiB. All processing stays in your browser.
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