Wood Drying Calculator

Estimate how long it takes to air dry or kiln dry lumber by species and thickness.

Estimated Drying Time
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Water to Remove
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Weight Loss
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Drying Rate
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Risk Level
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Wood Drying Guide

Air drying rule of thumb: ~1 year per inch of thickness

Kiln drying: 6-8 weeks for 4/4, varies by species

Drying Tips

  • Sticker spacing: Place stickers every 12-16 inches for 4/4 lumber
  • End sealer: Seal end grain with wax or sealer to prevent checking
  • Air circulation: Ensure good airflow through the stack
  • Weight the stack: Place heavy weight on top to prevent warping

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