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Decision fieldQuote-basedOptitex 2D/3D Pattern DesignGlobalRemoveOpen accessFreeSewingGlobalRemoveOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveOpen accessFabric Mass Unit ConverterGlobalRemove
Decision fit
Primary jobFind patterns & fitFind patterns & fitFind patterns & fitChoose materials
AreaPatterns & fitPatterns & fitPatterns & fitMaterials
Best forIntegrated pattern, marker, and 3D production workflowsCustom-fit home sewing patternsAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceTranslating the same fabric mass-per-area result between metric and U.S. customary listings
Know before usingPricing is not public, modules and system requirements must be confirmed, and macOS is not supported. Vendor accuracy and fit language does not prove results for an actual product. Pilot native and exchanged files with the receiving supplier, calibrated materials, approved blocks and grade rules, marker and output devices, tech-pack fields, training, version control, and risk-appropriate physical fit and production checks.A generated pattern is not independent fit evidence or a production-ready graded block. The result still depends on accurate measurements, the selected design and options, ease assumptions, fabric behavior, construction, and representative test garments. An account stores saved patterns and measurement sets, so review the platform's privacy terms before retaining personal measurements.The record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review.The result is a numerical unit conversion, not a new measurement or conformance decision; it does not establish sample or lot representativeness, significant digits, drape, warmth, opacity, thickness, stretch, strength, shrinkage, durability, sewability, end use, target, or tolerance.
Practical access
ForApparel brandsMakersApparel brandsBoth
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessQuote-basedOpen accessOpen accessOpen access
FormatSoftwareSoftwareStitch AuthorityStitch Authority
Source typeFirst-party platformOpen-source projectStitch AuthorityStitch Authority
Source and review
What the source establishesOptitex's current page describes 2D pattern creation, grading, verification, Tech Pack Essentials, marker creation and nesting, cut and plot output, 3D virtual samples, fabric simulation, colour and print placement, tension maps, and avatar editing. Its support page lists native and standard CAD interchange routes and states that Optitex does not support macOS.FreeSewing's official documentation says the browser editor drafts a selected design in real time from a measurement set rather than scaling or grading a standard-size pattern. Users can adjust design options and export the generated result, including as PDF; saving the pattern to an account is optional and is used to revisit it later.The guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments.The calculator uses the NIST SP 811 Appendix B.8 conversion from avoirdupois ounces per square yard to kilograms per square metre and links to a source-reviewed fabric mass record for method, sampling, conditioning, and product controls.
Linked page reviewedJul 21, 2026Jul 21, 2026Jul 16, 2026Jul 16, 2026
Next review dueJan 17, 2027Jan 17, 2027Jul 16, 2027Jul 16, 2027
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