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Decision fieldFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessFabric Mass Unit ConverterGlobalRemoveFree accountWoolmark Learning CentreGlobalRemoveOpen accessControlled Tech Pack OrientationGlobalRemove
Decision fit
Primary jobFind patterns & fitChoose materialsLearn techniquesSource production
AreaPatterns & fitMaterialsTechniques & repairProduction
Best forSearching current and out-of-print sewing patternsTranslating the same fabric mass-per-area result between metric and U.S. customary listingsStructured wool educationUnderstanding what a tech pack must control before using a template or releasing work
Know before usingCommunity members add and quality-control the records, so confirm sizing, measurements, fabric suggestions, format, availability, errata, license, and purchase terms with the designer or publisher. Adding an entry to a stash does not provide the pattern files. Saved searches and private PDF storage are paid Plus features, and a listing or review does not establish pattern accuracy or fit.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.This is Woolmark-operated education focused on wool, not a neutral comparison of all fibres or processing systems. A completion badge records coursework, not independent proof of production competence, product performance, environmental impact, or compliance. Confirm technical values and local requirements against current standards before production use.An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority.
Practical access
ForMakersBothBothApparel brands
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessFree accountOpen accessFree accountOpen access
FormatCommunityStitch AuthorityReferenceStitch Authority
Source typeCommunity databaseStitch AuthorityIndustry organizationStitch Authority
Source and review
What the source establishesThreadloop's official guide describes an independent, fully crowdsourced database covering available and out-of-print sewing patterns. Its search supports pattern type, fabric type, age group, body type, cup size, level, format, file features, language, measurements, availability, and other filters; members can also track a stash, wishlist, projects, reviews, and discussions.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.The current Woolmark Learning Centre library publishes free account-based coursework with module counts, completion times, progress tracking, knowledge checks, and supporting resources. Its wool programs cover fibre science, raw-wool and yarn processing, dyeing and finishing, woven textiles, knitwear, product quality, and wastewater management for learners and facilitators.The guide cites current ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it explicitly separates those authorities from product-specific technical and market decisions.
Linked page reviewedJul 21, 2026Jul 16, 2026Jul 21, 2026Jul 16, 2026
Next review dueJan 17, 2027Jul 16, 2027Jan 17, 2027Jul 16, 2027
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