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D6192 – Standard Test Method Technical Guide
📐 Scope and Body Measurement Categories
ASTM D6192/D6192M-19 (Reapproved 2023) establishes the standard tables of body measurements for girls from sizes 2 to 20, encompassing Regular, Slim, and Girls Plus categories. Developed from historical U.S. Department of Commerce data and validated against modern 3D avatar technology (Alvanon Inc.), the standard is designed to reflect the gradual growth patterns of children, specifically targeting a developmental range with a maximum age of approximately 12½ years for size 20. These tables serve as a baseline for creating apparel, requiring designers to independently account for fabric ease, body movement, and styling.
The standard uniquely integrates shared sizing for early childhood. The size table includes the range of Toddler sizes (2, 3, 4) and Kids sizes (5, 6), both designated as “BG” (Boy, Girl). These values are for both girl’s and boy’s sizing and are included in the parallel boy’s standard to avoid duplicity and reflect the similar body structures of young children.
💡 Baseline Measurement Concept: The body measurements listed in these tables represent the human body, not the finished garment. Designers must independently incorporate ease allowances for movement, fabric type, and styling to achieve the intended garment fit. The tables are tools for creating consistent sizing blocks.
📊 Standard Size Table Framework and Measurement Systems
The complete range of Girls sizing is categorized by stature and body type. Slim subjects are the same stature (height) as Regular subjects but with a slimmer body and lower body weight. Plus subjects share the same stature as Regular subjects but with a fuller body and higher body weight, as detailed in Tables D6458/D6458M. This framework allows for consistent vertical grading across body types.
| 🟦 Category | 📏 Size Nomenclature | 🎯 Stature Grade | ⚡ Body Type |
|---|---|---|---|
| Toddler BG | 2, 3, 4 | Shared (Boy/Girl) | Regular, Slim |
| Kids BG | 5, 6 | Shared (Boy/Girl) | Regular, Slim |
| Girls Regular | 7 to 20 | Girls Average | Regular (Baseline) |
| Girls Slim | 7 to 20 | Same as Regular | Slim (Lower Weight) |
| Girls Plus | Per D6458 | Same as Regular | Plus (Higher Weight) |
The standard provides measurements in two distinct unit systems. This update removed terminology from D5219 to ease management. The following table outlines the strict conformance rules for dual-system usage.
| 🟦 System Requirement | 📐 SI Units | 📏 Inch-Pound Units |
|---|---|---|
| Primary Units | Centimeters (cm) | Inches (in.) |
| Conversion Status | Not exact equivalent | Not exact equivalent |
| Usage Rule | Independent | Independent |
| Cross-System Mixing | Prohibited | |
⚠️ Mandatory System Independence: The values stated in either SI units or inch-pound units are to be regarded separately as standard. To ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Selecting one system for your entire spec sheet is mandatory.
⚙️ Application and Garment Fit Considerations
The body measurement standard is explicitly designed to eliminate “sudden shifts of proportion” to reflect the gradual growth and development of the child. This was verified by a three-dimensional Avatar created by Alvanon Inc. for a visual reference. Subcommittee D13.55 updated this version by removing terminology from D5219 to avoid duplicity and ease management of the standard.
Because Slim and Plus body types maintain the same stature as Regular sizes, manufacturers can use a single height grade block for all three variations, modifying only the horizontal circumference measurements (chest, waist, hips) and body weight distribution to achieve the desired fit category. Referencing the Plus tables, users must consult Tables D6458/D6458M for the specific plus body measurement data. All size ranges were verified against historical CDC and NCHS growth charts to ensure alignment with modern anthropometric data.
❓ Frequently Asked Questions
🔍 What is the age limit associated with these tables?
© 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes precedence.