Wood Shrinkage Calculator

Calculator Instructions

Species:            
Width: Inches: Fractions:
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
    • Industrial CNC
      Affordable, Easy, Industrial Grade CNC Routers for Woodworking and Cabinetmaking - Free Lifetime Support
    • Holz-Her US Inc.
      Custom Edgebanders, Vertical Panel Saws, CNC Beam Saws, Wide Belt Sanders, CNC Point to Point Boring Machines, CNC Routers
    • RT Machine Co.
      Stocking Distributor of New and Used Woodworking Machinery
    • Sandman Products
      Affordable Sanding Tables and Inspection Lighting
    • TotalFinishingSUPPLIES.com
      Solutions and supplies from spray tips to spray booths for all your woodworking needs
    • Weinig Group-USA
      Wood Moulders and Knife Grinding Equipment
    • Colonial Saw
      North American Supplier of Striebig Panel Saws, Lamello Specialty Tools and a Wide Range of Saw and Tool Grinding Machinery
    • T-Tool USA LLC
      Quality Tool-Holders, Tooling Supplies and Accessories for Numerous Cutting and Grinding Applications
    • Baker Products
      Industrial Woodworking Machines, Wooden Pallet Manufacturing Machines, & Portable Sawmills
    • CabinetCRUNCHER
      3D Cabinet Design and Construction Software Powered by SketchUp and Excel, Precise Cut List Calculators with Highly Adjustable Construction Options for Cabinetmakers and Woodworkers of All Levels
    • The Millwork Studio
      Millwork Shop Drawings and Estimates
    • American Fabric Filter Co.
      Provider of Custom Made Filter Bags and Transfer Sleeves
    • Doucet Machineries Inc.
      Designer, Manufacturer and Integrator of Machinery for the Secondary Wood Processing Industry

    Become a Sponsor today!