NHLA Rules

Hardwood Grading + Calculator

Free · Designed for iPad

The official NHLA Rules for grading hardwood lumber (2023), plus a cuttings calculator, video resources, contact page, and F.A.Q., now as an app! Internationally recognized NHLA hardwood lumber grading standards and sales code at your fingertips. A cuttings calculator, accessibility features for ease-of-use, video resources, charts, metric conversion table, species exceptions, definitions, tips, shortcuts and more are all included. Includes: Methods Used in Applying Inspection Rules Standard Grades Standard Inspection by Species, Including Cypress Tropical Hardwoods Inspection of Kiln Dried Lumber Special Combined and Face Grades Furniture Dimension Stock Strips Hardwoods for Construction Additional information: Original National Inspection Regulations National Re-Inspection Regulations & Guarantee Index of Woods NHLA Sales Code About NHLA Industry standards for the hardwood lumber industry were created in 1898 by the establishment of the National Hardwood Lumber Association and its subsequent “Rules for the Measurement & Inspection of Hardwood & Cypress.” The Rules for the inspection of lumber are uniform in construction and application but also carry with them the element of stability. The NHLA Hardwood Grading Rules are the product of the process of evolutionary development, and that process is still in operation. It is a process of growth and expansion to meet the necessities of varying conditions and markets and will continue and evolve with the global hardwood industry. Questions about the NHLA Hardwood Lumber Grading Rules should be directed to the NHLA Chief Inspector. Contact information can be found at www.nhla.com.

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The Ask Us tab has been renamed to the Info tab. The schedule for the 2025 NHLA Annual Convention has been added to the Info tab. Some formatting throughout the app has been updated. Retaining the U.S.D.A. Forest Service Forest Products Laboratory shield and information on the rear cover for their generous funding.

Version 1.2.7

The developer, NHLA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Other Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

  • Seller
    • National Hardwood Lumber Association of Tenn., Inc.
  • Size
    • 105.4 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 12.2 or later.
    • iPhone
      Requires iOS 12.2 or later.
    • iPad
      Requires iPadOS 12.2 or later.
    • iPod touch
      Requires iOS 12.2 or later.
    • Mac
      Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    • Spanish
  • Age Rating
    4+
  • Copyright
    • © 2025 National Hardwood Lumber Association, Inc.
  • Developer Website
  • Privacy Policy

    • More by NHLA

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