Board and batten layout calculator

Lay out equal wall panels with a full batten at each edge and between every panel.

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Wall width

Batten width

More inputs and assumptions

Number of panels

Answer

…

Lay out equal wall panels with a full batten at each edge and between every panel.

More results

Precision and calculation record

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Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

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Formula and assumptions

Panel width = (wall width − (panel count + 1) × batten width) ÷ panel count. Positions start at the wall’s left edge. Does not subtract openings or design fastening.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Board and batten layout calculator

Lay out equal wall panels with a full batten at each edge and between every panel.

Panel width = (wall width − (panel count + 1) × batten width) ÷ panel count. Positions start at the wall’s left edge. Does not subtract openings or design fastening.

Next: Wainscoting layout calculator

A worked example

Example inputs: wall width = 100, batten width = 2, number of panels = 4. Equal clear panel width = 22.5.

Before you use the result

Panel width = (wall width − (panel count + 1) × batten width) ÷ panel count. Positions start at the wall’s left edge. Does not subtract openings or design fastening.

Example results for wall width

These examples use Batten width: 2; Number of panels: 4. They are reference calculations, not recommended settings.

Wall width	Equal clear panel width
50	10
100	22.5
200	47.5

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ToolOctopus. “Board and batten layout calculator.” Updated 2026-09-26. https://tooloctopus.com/board-and-batten-layout-calculator.

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