Manage Size Charts
Create your own Size Chart Template to specify the sizes and sample size for a Pattern Type. After assigning the chart to a pattern, you can define its grading rules.
You create and configure the chart, then choose which chart to assign to each pattern based on its Pattern Type. Clab applies grading automatically according to the rules in the assigned chart.
A configured template can be reused across patterns that need the same grading rules.
When a template is assigned to a pattern, you can choose to apply it as a copy. This allows you to make local changes at the pattern level without affecting the original template logic.
Create a new Size Chart
Open the project and make sure a pattern type is selected.
Go to Settings → Size Charts, then choose a Gender and a Pattern Type. This ensures that the size chart matches the intended model structure.
Click on New Size Chart button.
Assign a Name and fill the Size List, a comma separated list of size names (e.g., 42,44,46,48,50).
Choose the Sample Size from the drop down menu.
Click Create to finalize the new Size Chart.
Editing a Size Chart
Open the project and make sure a pattern type is selected.
Go to Settings → Size Charts, then choose a Gender and a Pattern Type.
Select the desired Size Chart.
You can edit the Name, the Size List and the Sample Size.
You can now enable or disable the “Set as template” switch to make the size chart editable without the additional controls applied to templates.
Click Save to confirm.
Important: Editing a Size Chart Template will update it across all projects where it has been directly assigned.
Save a Local Size Chart as a Template
If you have customized a Local (project-specific) Size Chart and want to reuse its grading rules across multiple projects, you can save it as a Size Chart Template.
Saving a local Size Chart as a template creates a shared reference that can be assigned to other projects.
What happens when you save a Size Chart as a Template
A new Size Chart Template is created
The local Size Chart remains unchanged
All sizes, grading rules, and values are copied to the template
The template can be assigned to multiple projects
Steps
Open the project that contains the local Size Chart
Click Manage Size Chart
Click Save as Template
Enter a name for the new template
Click Create Template to confirm
After saving the Template
The template becomes available for assignment to other projects
The current project will continue using its local Size Chart
You can update the template independently from local charts
Save a Size Chart Template as a Local Copy
When a Size Chart Template is already assigned to a project, you may need to customize it only for that project without changing the original template.
What happens when you save a Local Copy
A new, project-specific Size Chart is created
The original template remains unchanged
All grading rules and values are copied to the local version
The local Size Chart can be modified without additional template controls
Steps
Open the project where the Size Chart Template is assigned
Click Manage Size Chart
Click Save as Local Copy
Click Create Local Chart to confirm.
After saving the Local Copy
The project will use the local Size Chart instead of the template
You can freely edit sizes and grading rules
You can later save the local Size Chart as a new template, if needed
Duplicate a Size Chart
To duplicate a Size Chart:
Select the Size Chart you want to duplicate.
Click Duplicate to open the summary window.
Enter the new name, define the size list, and set the sample size.
Click Save.
The new Size Chart will retain all grading rule values from the original.
If you add sizes, the grading rules will be automatically applied to the new ones.
If you remove sizes, their associated rules will be removed as well.
Delete a Size Chart
Important: This action will affect all projects where the selected Size Chart has been applied.
Go to Settings → Size Charts.
Select the appropriate Gender and Pattern Type to display the relevant size charts.
Choose the Size Chart you want to delete.
Click the Delete button.
Important: Matching Sample Sizes
If you assign a Size Chart with a sample size of 48, but the pattern was originally based on size 50, the pattern’s measurements will still reflect size 50 — even though it will now be labeled as size 48 in the chart.
To highlight this mismatch, the following message will appear in the Size Chart panel in the preview:
You are assigning a size chart with a sample size that is different from the anatomical size assigned to the pattern. Please check your settings.
This message is a reminder that while your pattern was created using size 50 as the anatomical base, it will now be associated with size 48 in the grading structure.
✅ Best practice
When developing a new pattern, always make sure that the Size Chart's sample size matches the anatomical base size used in the pattern.
If you're using a different naming convention or scale (e.g., S, M, L or 2, 3, 4 instead of 46, 48, 50), you will need to create a new set of grading rules to ensure consistency.
Import and export a Size Chart
To keep a transferable copy, select a chart and choose Export Size Chart, then click Export to download its JSON file.
To import a chart:
Open Size Charts and select Import Size Chart.
Upload a Clab-exported size chart
.jsonfile.Review the chart preview and click Import.
The imported chart becomes a template you can assign to a pattern.
Restore default charts
Use Restore Default Charts when you want to replace the current chart collection with the default templates available in Clab.
Restoring defaults permanently replaces the current size charts and resets their references in patterns. Export any charts you want to keep before proceeding.
Review the confirmation, select Yes, replace all my size charts, and click Restore Default Charts. Afterward, review which chart to assign to each pattern.
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