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Decision fieldPaidTUKAcadGlobalRemoveOpen accessPattern Test Brief TemplateGlobalRemoveFree + paidThreadloop Sewing Pattern DatabaseGlobalRemoveOpen accessKnitting Needle to Crochet Hook Size ChartGlobalRemove
Decision fit
Primary jobFind patterns & fitFind patterns & fitFind patterns & fitLearn techniques
Also useful forNo additional job recordedNo additional job recordedNo additional job recordedNo additional job recorded
AreaPatterns & fitPatterns & fitPatterns & fitYarn
Best for2D patternmaking and grading with public plan tiersPlanning a sewing, knitting, or crochet pattern testSearching current and out-of-print sewing patternsFinding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge
Know before usingTUKAcad is Windows software; the official Mac route requires a separate virtual Windows environment. Pattern-piece, graded-size, marker, import and export, digitizing, and production-output capabilities vary materially by paid tier. A CAD file or marker report does not prove fit or factory readiness, so verify formats, grade rules, seam and production data, hardware, training, and downstream compatibility before subscribing.The workflow is not a contract or quality certification; local legal duties and technical review may still apply.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.A shared nominal diameter does not make a knitting needle and crochet hook interchangeable or predict equal gauge or fabric. The reference is not a physical measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, or project approval.
Practical access
ForBothBothMakersMakers
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessPaidOpen accessFree + paidOpen access
FormatSoftwareStitch AuthorityCommunityStitch Authority
Source typeFirst-party platformStitch AuthorityCommunity databaseStitch Authority
Account, payment, and exit
Access scopeNot yet reviewed at this level.Not yet reviewed at this level.Sewer searching pattern records or organizing patterns, projects, fabric, notions, and private files.Not yet reviewed at this level.
Before an accountNot yet reviewed at this level.Not yet reviewed at this level.Browse the pattern database, guide, designers, publications, and public community areas without creating an account.Not yet reviewed at this level.
Free-account boundaryNot yet reviewed at this level.Not yet reviewed at this level.A free account needs no card and supports a stash, wishlist, projects, reviews, and personal organization.Not yet reviewed at this level.
Payment boundaryNot yet reviewed at this level.Not yet reviewed at this level.Plus adds PDF pattern storage, collections, saved searches, bulk editing, and other workflow features on monthly or annual billing.Not yet reviewed at this level.
Cancellation or exitNot yet reviewed at this level.Not yet reviewed at this level.Cancel through an in-account link. Paid features remain through the current billing cycle, then the account returns to free features.Not yet reviewed at this level.
Saved work and dataNot yet reviewed at this level.Not yet reviewed at this level.The terms say submitted materials remain yours, but the checked public pages do not explain a full export or how stored PDFs behave after downgrade. Keep originals outside the platform.Not yet reviewed at this level.
Source and review
What the source establishesTukatech's current TUKAcad page publishes monthly Learning and Professional editions for digital patternmaking and grading, with a higher tier adding marker making, data import and export, digitizing, cut-data optimization, and yield reports. It discloses plan limits on pattern pieces, graded sizes, and marker dimensions, plus built-in help, block templates, a trial, Windows requirements, and the Windows-on-Mac route.The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface.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. Current terms state that the free plan requires no card, paid upgrades start billing immediately, cancellation retains paid features through the current cycle, and the account then returns to free features.Rechecked July 28, 2026. The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows, aligns hooks and needles only when their nominal millimetre value matches, and leaves missing rows or aliases unfilled.
Linked page reviewedJul 21, 2026Jul 15, 2026Jul 28, 2026Jul 28, 2026
Next review dueJan 17, 2027Jul 15, 2027Jan 24, 2027Jul 28, 2027
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