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Side-by-side evidence and decision metadata for selected textile resources.
Decision fieldOpen accessKnitting Needle to Crochet Hook Size ChartGlobalRemoveOpen accessYarnSubGlobalRemoveOpen accessEU VIES VAT Number ValidationEuropean UnionRemoveOpen accessPattern Grading & Size-Run Validation RecordGlobalRemove
Decision fit
Primary jobLearn techniquesChoose materialsCheck standardsFind patterns & fit
Also useful forNo additional job recordedNo additional job recordedNo additional job recordedNo additional job recorded
AreaYarnYarnStandardsPatterns & fit
Best forFinding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gaugeBuilding a substitution shortlist for a discontinued or unavailable yarn before checking quantity, availability, and a representative swatchChecking an EU supplier's stated VAT number and saving the dated validation response as one identity and invoicing controlAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence
Know before usingA 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.A suggested match is a data-based shortlist, not proof that the yarn suits the pattern or maker. Records can be incomplete or wrong, price bands are approximate, availability varies by country and seller, and shade-level matching is unavailable. YarnSub says affiliate status does not change suggestions, but equally rated matches are ordered by brand popularity. Confirm required gauge, total length, fibre behavior, construction, care, colour, dye lot, accessibility, price, availability, and seller terms, then make and assess a representative swatch before committing.A valid VAT number is not proof of manufacturing capability, facility ownership, authorized bank instructions, product origin, tax advice, quality, capacity, certification, labor conditions, or delivery; names and addresses may not be returned for every country, and temporary database outages occur.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.
Practical access
ForMakersMakersApparel brandsApparel brands
Location or jurisdictionGlobalGlobalEuropean UnionGlobal
AccessOpen accessOpen accessOpen accessOpen access
FormatStitch AuthorityReferenceReferenceStitch Authority
Source typeStitch AuthorityFirst-party platformOfficial registryStitch Authority
Account, payment, and exit
Access scopeNot yet reviewed at this level.Maker comparing a replacement for a named yarn before buying.Not yet reviewed at this level.Not yet reviewed at this level.
Before an accountNot yet reviewed at this level.Search a named yarn, inspect suggested substitutes, and filter by fibre and approximate price band without creating an account.Not yet reviewed at this level.Not yet reviewed at this level.
Free-account boundaryNot yet reviewed at this level.The checked core substitution route does not require an account, and the FAQ does not offer user-entered yarn records.Not yet reviewed at this level.Not yet reviewed at this level.
Payment boundaryNot yet reviewed at this level.No subscription is presented for the core route. Affiliate retailer links and optional donations help fund the site; equal-rated matches are ordered by brand popularity.Not yet reviewed at this level.Not yet reviewed at this level.
Cancellation or exitNot yet reviewed at this level.There is no account or recurring plan to cancel for the core route. The newsletter has a separate unsubscribe link.Not yet reviewed at this level.Not yet reviewed at this level.
Saved work and dataNot yet reviewed at this level.YarnSub does not expose an API and does not accept user-entered yarn details. Use the data-issue link on a yarn page for corrections.Not yet reviewed at this level.Not yet reviewed at this level.
Source and review
What the source establishesRechecked 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.YarnSub's official FAQ says its matching software compares gauge, texture, yarn weight and density, fibre content, and fibre qualities such as drape and softness. Discontinued yarns remain searchable as starting points but are excluded from suggestions. Result filters can exclude animal, animal-derived, synthetic, or plant fibre groups and use a subjective $ to $$$$$ price indicator. The site does not accept user-entered yarn details, individual shade cards, or expose an API. Each yarn page provides a data-issue route.VIES is the European Commission's online VAT Information Exchange System interface for querying national VAT databases to determine whether a submitted number is valid for intra-EU cross-border trade at the time of the request.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.
Linked page reviewedJul 28, 2026Jul 28, 2026Jul 15, 2026Jul 27, 2026
Next review dueJul 28, 2027Jan 24, 2027Oct 13, 2026Jul 27, 2027
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