Wood Shrinkage Calculator

Calculator Instructions

Species:            
Width: Centimeters: .
Initial MC:
(Moisture Content)
            % (no decimal necessary)
Final MC:
(Moisture Content)
            % (no decimal necessary)
Type of Lumber: Flatsawn
Radialsawn


Instructions: Wood Shrinkage Calculator

Width:
Enter the actual measured width of the lumber, in inches and fractions of an inch (centimeters, if metric).

Initial Moisture Content:
Enter the initial moisture content(MC). Do not enter decimals or fractions, and do not enter the percentage sign after the value. Values over 30% MC will be calculated as 30% MC. It is generally accepted changes in MC above 30% do not affect dimension because free water is present.

Final Moisture Content:
Enter the final moisture content(MC). Do not enter decimals or fractions, and do not enter the percentage sign after the value. Values over 30% MC will be calculated as 30% MC.

Type of Lumber:
By default, flatsawn is the type of lumber chosen. If you would like to calculate the shrinkage for radialsawn lumber, choose the radialsawn option.

Detailed reference material regarding the calculation of Wood Shrinkage can be accessed via the links below. If you have any questions regarding the methodology used in WOODWEB's Wood Shrinkage calculator, we suggest that you post your question at our
Sawing and Drying Forum.

  • Measuring/Monitoring Moisture Levels
  • I've Got that Shrinking Feeling
  • Wood and Water

    Click Here to Access the Wood Shrinkage Calculator
  • Today's Sponsors
    • Cab Parts
      Pre-manufactured Components for Easy-to-Assemble Cabinet Boxes
    • Parts Cutter CNC
      CNC Cabinetry and Closet Parts
    • WalzCraft
      Custom Doors and Wood Products
    • American Vision Cabinets
      Leading provider of Custom CNC cabinet parts and components and Edge banding services
    • MARTIN Woodworking Machines Corp.
      Quality Woodworking Machinery Engineered and Manufactured in Germany
    • Supergrit Abrasives
      Industrial Quality Abrasives Manufactured by Leading US and Foreign Companies
    • TradeJobPlacement.com
      Individualized Placement Services, Specializing in Millwork Design Engineers
    • WOODWEB, Inc.
      The Information Resource for the Woodworking Industries
    • Shop Gear Inc.
      Distributor of Co-matic Power Feeders, Le-matic Portable Edgebanders, and Supplier of Woodworking Machinery, Tooling and Accessories in North America
    • KCD Software
      Powerful 3D Cabinet/Closet Design Software with Built-In Touchscreen Mode for Mobile Use with Best Production Practices Including Direct to Cut List, Cabinotch and/or CNC Machining
    • American National Knife
      Manufacturer of HSS and Carbide Tipped Woodworking Knife Sets for Planers, Jointers, Molders, Shapers
    • Sandman Products
      Affordable Sanding Tables and Inspection Lighting
    • Wood Doctor's Rx, LLC
      Wood Processing Seminars, Kiln Operators Seminar & Training, and Advanced Drying Evaluation & Training

    Become a Sponsor today!