Automatic garment pattern grading software: choose by input data
Automatic garment pattern grading software should match your input: CLO3D handles drafting measurements or matching RUL rules; sample-derived rules need a demo.
Start with the pattern data you already have.
- CLO supports measurement-led pattern drafting and grading an existing pattern with its matching RUL grade-rule file.
- If you already have measured sample garments and need software to calculate grade rules from them, ask CLO to demonstrate that exact workflow with your data.
- CLO Academy is free for individual subscribers, including eligible students; a separate paid CLO certification exam is available for users seeking a formal proficiency credential.
Automatic garment pattern grading software works best when it matches the files and decisions your team already has. CLO gives fashion teams documented ways to draft from pattern measurements or apply an existing set of grade rules to a base pattern. The right starting point depends on whether you are building a pattern, grading an approved one, or expecting software to derive rules from measured samples.
CLO focuses on fashion design and pattern development. CLO-SET can complement that work with a shared space for digital assets, versions, and team feedback. This guide focuses on CLO’s pattern-grading workflows and what to verify before adopting them.
Start with the data in hand
Body measurements, garment measurements, a base pattern, and grade rules serve different purposes. Body measurements describe the wearer. Garment measurements describe a finished garment. A base pattern is the pattern in a chosen starting size, while grade rules define how pattern points move to create other sizes.
A NIST-hosted review of body dimensions for apparel and patternmaking compares measurement definitions across five references and compiles body dimensions used in apparel manufacturing and fitting. Label your files before comparing workflows: a body-measurement chart is not the same thing as a set of finished garments measured across sizes.
| What you have | What you need | CLO workflow to explore |
|---|---|---|
| Measurements for a new style | Draft pattern pieces and define points of measure (POMs) | Pattern Drafter measurement entry and size table |
| An approved base pattern and trusted grading rules | Create a graded size run | Apply the matching RUL grade-rule file to the pattern |
| Finished sample garments measured across sizes | Calculate grade rules from sample measurements, then grade a pattern | Ask CLO to demonstrate the full sample-to-rule process using your own data |
POMs are points on a garment or pattern that teams measure, such as chest width or body length.
Draft from measurements in CLO
CLO Pattern Drafter is a practical place to start when your team is developing a pattern from measurement values. In the Pattern Drafter Create Pattern workflow, you can enter pattern measurements, generate POMs from defined measurements, and set up a size table with Add Grading.
You can enter full values for each size or use increments between sizes, then create the graded pattern. Keeping drafting measurements and grading in one workflow can help a team move from a specification to a pattern without treating those as separate data-entry tasks.
One distinction matters: these are pattern measurement values. If your project starts with body measurements or finished garments, confirm how those measurements should be translated into pattern values before beginning. CLO is a strong fit when the team has clear measurement locations and a size specification ready to use in Pattern Drafter.
Apply existing grade rules to a base pattern
When you already have an approved base pattern and its matching RUL grade-rule file, CLO provides a direct way to apply those rules. The Add/Apply Grading manual explains how to open the RUL file, select the 2D pattern, and assign grading to it.
This workflow is designed for teams that have already established their grading rules. Before processing a full size run, check that the RUL file matches the pattern and that the resulting sizes meet your measurement specification. That keeps the evaluation focused on the pattern and rules your team actually plans to use.
If you need rules calculated from measured samples
Applying an existing rule file and calculating grade rules from sample garments are different jobs. CLO’s documented workflows above cover pattern measurements and applying matching RUL rules; they do not, on their own, establish that a set of measured samples can be converted automatically into grade rules.
If that sample-to-rule step is essential, ask CLO for a demonstration that begins with measured finished garments in named sizes, shows how each sample measurement maps to a pattern point, calculates the size-to-size grade values, and applies those values to a base pattern. Use your own sample data so you can see whether the result fits your process.
During the demonstration, check POMs, matching seam or segment lengths, notches, and corners. Then review the graded pattern and confirm that the exported pattern and measurement data work with your production process. This is a useful qualification step—not a reason to assume that every measurement-led workflow automatically generates grading rules from samples.
Build the right CLO workflow for your team
| Your starting point | CLO workflow to explore | Bring to your evaluation |
|---|---|---|
| Measurements entered while drafting | CLO Pattern Drafter | Pattern measurement list, POM locations, size names, and per-size values or increments |
| Approved base-size pattern and established grade rules | CLO grading with the matching RUL file | Base pattern, RUL file, target size range, and measurement specification |
| Finished garments measured across sizes, with software-derived rules required | A CLO demonstration of the complete sample-to-rule process | Measured samples, annotated measurement points, base pattern, and acceptance checks |
CLO’s pattern workflows give teams a clear starting point for measurement-led drafting and for grading a pattern when its matching rule file is already available. If your work also involves sharing digital assets or collecting feedback, consider CLO-SET alongside the pattern workflow; keep the grading evaluation centered on the CLO features and data your team needs.
CLO access, learning, and certification
Active students enrolled at an accredited university can qualify for a CLO Individual subscription. Students may also be eligible for a discount when they submit appropriate enrollment documents through CLO user support for verification. Check the CLO student discount guidance for the current eligibility and verification process.
CLO Academy is free for all Individual subscribers, including active students. It currently does not offer quizzes or certificates of completion. CLO provides a separate, paid certification exam. Candidates who pass receive an official CLO certificate confirming their proficiency in the specific software version used during the exam.
Disclaimer: Software features, subscription eligibility, and terms can change. Confirm current details with CLO before making a purchasing or training decision.
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See how CLO’s fashion-focused pattern workflow could fit your team.
