Plywood calculator

Compare two uniform sheet orientations for covering a rectangular surface.

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Surface length

Surface width

More inputs and assumptions

Sheet length

Sheet width

Answer

…

Compare two uniform sheet orientations for covering a rectangular surface.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

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.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Grid count = ceiling(length/sheet length) × ceiling(width/sheet width). Area-only count is a lower bound, not a cutting plan. Gaps, openings, offcut reuse, staggered joints and structural span requirements are excluded.

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 Plywood calculator

Compare two uniform sheet orientations for covering a rectangular surface.

Next: Rectangle calculator

A worked example

Example inputs: surface length = 12, surface width = 8, sheet length = 8, sheet width = 4. Sheets in selected grid = 4.

Before you use the result

Example results for surface length

These examples use Surface width: 8; Sheet length: 8; Sheet width: 4. They are reference calculations, not recommended settings.

Surface length	Sheets in selected grid
6	2
12	4
24	6

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ToolOctopus. “Plywood calculator.” Updated 2026-09-26. https://tooloctopus.com/plywood-calculator.

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