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Decision fieldOpen accessHook & Needle Diameter ReferenceGlobalRemoveFree downloadSeamly2DGlobalRemoveOpen accessFreeSewingGlobalRemoveFree accountThreadloop Sewing Pattern DatabaseGlobalRemove
Decision fit
Primary jobLearn techniquesFind patterns & fitFind patterns & fitFind patterns & fit
AreaYarnPatterns & fitPatterns & fitPatterns & fit
Best forChecking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gaugeDigital pattern draftingCustom-fit home sewing patternsSearching current and out-of-print sewing patterns
Know before usingThe reference is not a dimensional measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, gauge result, or proof that a proposed tool will produce the required fabric.Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels.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.Community 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.
Practical access
ForMakersBothMakersMakers
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessOpen accessFree downloadOpen accessFree account
FormatStitch AuthoritySoftwareSoftwareCommunity
Source typeStitch AuthorityOpen-source projectOpen-source projectCommunity database
Source and review
What the source establishesThe lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows and follows the Council's warning that company letter and number labels vary; blank aliases remain blank instead of being inferred.The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum.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.Threadloop'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.
Linked page reviewedJul 16, 2026Jul 21, 2026Jul 21, 2026Jul 21, 2026
Next review dueJul 16, 2027Jan 17, 2027Jan 17, 2027Jan 17, 2027
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