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Wood Movement Calculator

Estimate radial or tangential dimension change from a moisture-content change between 6% and 14%.

Prefilled values are examples. Replace them with measurements and current costs for your project.

Inputs

Wood, grain, and moisture

Select a species listed in USDA Wood Handbook Table 13-5. Other species are not included in this version.

Use the coefficient direction matching how the board was sawn and the dimension being estimated.

Range: at least 0.01 in

Range: 6–14 %

Range: 6–14 %

Result

Estimated dimension change
0.3389 in
Selected dimensional change coefficient per MC point
0.00353
Estimated target dimension
12.3389 in
Expansion

Formula

Estimated dimension change
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Estimated target dimension
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Results are planning aids based on the inputs and assumptions shown. Verify dimensions, stock sizes, hardware clearances, kerf, and current prices against your project before cutting or quoting.