Pattern Grading Specification Generator
Generate precise grading specs and size scaling rules for manual pattern making
What You Can Do
You can generate detailed grading specifications that transform your pattern grading knowledge into documented, measurable rules for your team or manufacturing partners. The skill applies dimensional analysis to calculate proportional size increments for specific measurement points—bust, waist, hip, length, armhole depth, sleeve length—while accounting for ease allowances, fabric behavior, and target market body proportions. You'll produce grading sheets that reduce errors, ensure fit consistency across XS to XXL, and eliminate ambiguity when training pattern makers or communicating with factories.
Features
calculates proportional increments for each size across key body points (bust, waist, hip, length, armhole, sleeve)
applies size-specific ease allowances based on garment type and construction method to maintain consistent wearing ease
generates clear, step-by-step grading specifications that junior pattern makers and manufacturing partners can follow reliably
defines complete size specifications from XS to XXL with validated measurement increments and proportional relationships
ensures proportions remain balanced across sizes and identifies potential fit issues before pattern production
accounts for seam placement, dart positioning, closure spacing, and other construction details that affect grading
incorporates fabric weight and hand behavior into grading recommendations for stretch, knit, or delicate materials
creates custom grading specs for tall, petite, plus-size, or other market-specific proportions
Example Output
Example 1: Fitted Bodice Grading Specification
- Bust: Base size 34" → increment +2" per size (XS 32", S 34", M 36", L 38", XL 40")
- Waist: +1.5" per size with 1" ease allowance maintained
- Armhole depth: +0.375" per size to accommodate shoulder development
- Dart intake: Decrease 0.25" per size to maintain proportional shaping
- Side seam length: +0.75" per size; graded from underarm point, not hem
Example 2: Size Specification Sheet
| Size | Bust | Waist | Hip | Length | Armhole | Sleeve |
|---|---|---|---|---|---|---|
| XS | 32" | 24" | 34" | 24" | 7.5" | 30.5" |
| S | 34" | 25.5" | 36" | 24.75" | 7.875" | 31.25" |
| M | 36" | 27" | 38" | 25.5" | 8.25" | 32" |
What's Included
- SKILL.md instruction file with pattern grading methodology and dimensional analysis framework:
- Grading Specification Template: formatted grading sheet with measurement columns for all standard sizes
- Body Proportion Reference Chart: baseline measurements and ease allowances by garment category (woven, knit, fitted, loose)
- Grading Rule Checklist: validation steps to confirm fit consistency and proportion balance across size range
- Size Specification Matrix: pre-built table for documenting complete measurements XS–XXL with increment calculations
Who It's For
- Pattern makers and grading specialists creating size ranges for apparel collections
- Design teams translating sample sizes into production-ready grading specifications
- Technical designers communicating sizing requirements to domestic or international factories
- Fashion educators teaching proportional grading and size scaling methodology
- Manufacturing partners implementing custom grading for brand-specific fit standards
Best For
- Developing grading rules for new garment silhouettes or seasonal collections
- Creating specialty fit specifications (tall, petite, plus-size) with validated proportions
- Establishing consistent sizing across multiple product categories or brands
- Training junior pattern makers on documented grading methodology and standards
- Transitioning designs between factories while maintaining fit and proportion integrity
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