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
    • Sandman Products
      Affordable Sanding Tables and Inspection Lighting
    • Baker Products
      Industrial Woodworking Machines, Wooden Pallet Manufacturing Machines, & Portable Sawmills
    • Industrial CNC
      Affordable, Easy, Industrial Grade CNC Routers for Woodworking and Cabinetmaking - Free Lifetime Support
    • Original Saw Company
      Industrial Radial Arm Saws
    • Vacuum Pressing Systems, Inc.
      Vacuum Pressing Equipment - Including Bag and Frame Systems
    • JKL Machinery
      US Exclusive Importer Casadei, Busellato, Vitap, Bonacin - Machinery Dealer representing New & Used Woodworking Machinery
    • Lockdowel, Inc.
      Invisibile Fastening Solutions for Fast and Accurate Assembly
    • Cab Parts
      Pre-manufactured Components for Easy-to-Assemble Cabinet Boxes
    • Limtech Industries, Inc.
      CNC Routers, Machinery for Woodworking, Plastic and Other Non-ferrous Metal Machining Applications
    • GreCon
      Spark Detection and Extinguishment Systems and Quality Assurance Measuring Equipment
    • Onsrud Cutter
      Router Tooling for Woodworking, Plastic and Non-Ferrous Metal Manufacturers
    • ETK International
      New and Used Woodworking Machinery, Spare Parts and Superior Service
    • Western Dovetail
      Custom Made Dovetail Drawers

    Become a Sponsor today!