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
    • ETK International
      New and Used Woodworking Machinery, Spare Parts and Superior Service
    • JKL Machinery
      US Exclusive Importer Casadei, Busellato, Vitap, Bonacin - Machinery Dealer representing New & Used Woodworking Machinery
    • Centex Automation
      New and Used Machinery sales and service
    • T-Tool USA LLC
      Quality Tool-Holders, Tooling Supplies and Accessories for Numerous Cutting and Grinding Applications
    • 360 Degree Machinery
      Specializing in high end American, European, and select Import woodworking machines.
    • ULTI-BOARD
      The Ultimate Spoilboard - ULTI-BOARD - Specifically Engineered and Formulated for the Ultimate in Spoilboard Performance - Not Your Ordinary Sheet of MDF.
    • Original Saw Company
      Industrial Radial Arm Saws
    • Country Saw and Knife
      Complete Sharpening Services for Wood and Metal Saw Blades, Jointer Knives, and Bandsaw Blades
    • TradeJobPlacement.com
      Individualized Placement Services, Specializing in Millwork Design Engineers
    • WoodJobs.com Search Consultants
      Free Employment Service for Woodworking Related Job Seekers
    • Western Dovetail
      Custom Made Dovetail Drawers
    • Safety Speed Manufacturing
      Economical Vertical Panel Saws, Panel Routers, Edgebanders and Widebelt Sanders

    Become a Sponsor today!