# NHLA Rules — Hardwood Grading + Calculator

> Hardwood Grading + Calculator (iPhone/iPad app by NHLA.)

- Source: https://appshunter.io/ios/app/nhla-rules/id6463164128 (this page in markdown: same URL + `.md`)
- Developer: [NHLA](https://appshunter.io/developer/1704028919)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 12.2 · 111 MB
- Languages: French (France), European Spanish
- Released: 2024-01-03
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/nhla-rules/id6463164128/reviews.md

## What is NHLA Rules?

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.


## Version history (last 5 releases)

### 1.2.9 — 2026-02-26

The Videos tab has been updated to better promote NHLA's services.

Retaining the U.S.D.A. Forest Service Forest Products Laboratory shield and information on the rear cover for their generous funding.

### 1.2.8 — 2025-11-21

A full French translation is now included in the app.

Some pages in the Rules tab have received minor corrections.

Retaining the U.S.D.A. Forest Service Forest Products Laboratory shield and information on the rear cover for their generous funding.

### 1.2.7 — 2025-09-28

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.

### 1.2.4 — 2025-03-05

A full Spanish translation for the Rules and the app has been added, accessible in the Settings.

Haptic feedback has been added throughout the app.

Buttons on the Videos tab have been updated.

Retaining the U.S.D.A. Forest Service Forest Products Laboratory shield and information on the rear cover for their generous funding.

### 1.2.2 — 2024-03-22

In the Table of Contents, the page number and link to Special Combined and Face Grades has been corrected.

In the Standard Grades table, the Minimum Size Cutting for #2A Common and #2B Common has been corrected.

Retaining the U.S.D.A. Forest Service Forest Products Laboratory shield and information on the rear cover for their generous funding.

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## More apps by NHLA

- [NHLA Member Community](https://appshunter.io/ios/app/nhla-member-community/id6470204716)

All apps by NHLA: https://appshunter.io/developer/1704028919

## Related topics

[nhla rules](https://appshunter.io/ios/topics/nhla-rules)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*