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Decision fieldFree accountThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessFabric Purchase PlannerGlobalRemoveOpen accessFabric Mass Unit ConverterGlobalRemove
Decision fit
Primary jobFind patterns & fitChoose materialsChoose materials
AreaPatterns & fitMaterialsMaterials
Best forSearching current and out-of-print sewing patternsDocumenting how a pattern-based fabric quantity becomes an order lengthTranslating the same fabric mass-per-area result between metric and U.S. customary listings
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 planner adds and rounds user-entered lengths; it does not create a cutting layout, infer shrinkage or matching allowances, compensate for a width change, establish usable width, or prove that the order quantity is sufficient.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
ForMakersMakersBoth
Location or jurisdictionGlobalGlobalGlobal
AccessFree accountOpen accessOpen access
FormatCommunityStitch AuthorityStitch Authority
Source typeCommunity databaseStitch AuthorityStitch 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.NIST defines 1 yard as exactly 0.9144 metre. Sewing & Craft Alliance guidance ties an applicable cutting layout to the exact view, size, fabric width, and nap condition and recommends layout work when listed conditions do not fit the project.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 16, 2026Jul 16, 2026
Next review dueJan 17, 2027Jul 16, 2027Jul 16, 2027
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