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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Open accessAdvanced Textiles Association SourcingGlobalRemove | Free + paidPattern TestersGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Choose materials | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Yarn | Materials | Patterns & fit |
| Best for | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Technical and specialty textiles | Coordinating an independent sewing-pattern test |
| Know before using | 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. | ATA's completeness language is an operator claim. Buyer-guide or member-directory inclusion does not establish a complete market map, current production capability, capacity, ownership, certification, product suitability, commercial terms, or project fit. Verify the actual company, site, product, documents, samples, and terms directly. | The interface and plan description do not prove tester reach, completion, feedback quality, fit validity, export quality, uptime, support, or suitability for an established release process. Measurements and photos can be sensitive personal data. Run a non-critical pilot, review the current privacy and service terms, define consent and photo rights, test exports and deletion, and keep pattern approval and release responsibility with the designer. |
| Practical access | |||
| For | Makers | Apparel brands | Apparel brands |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Free + paid |
| Format | Stitch Authority | Directory | Software |
| Source type | Stitch Authority | Industry organization | First-party platform |
| Source and review | |||
| What the source establishes | 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. | ATA's current sourcing page links buyer's guides covering suppliers and products, a searchable member directory, and other association sourcing tools for the advanced and specialty-textile supply chain. ATA's own directory overview describes company listings and product showcases as ways for fabricators to find products and potential partners. | Pattern Testers currently offers application intake, tester selection, feedback, photos, approvals, issue tracking, revisions, a reusable tester directory, and release deadlines. The public pricing page shows a limited free plan and paid Pro and Business tiers. Its June 2026 privacy policy lists names, email addresses, measurements, photos, feedback, application history, and assignments among the data processed. |
| Linked page reviewed | Jul 28, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 28, 2027 | Jan 17, 2027 | Jan 17, 2027 |
| Inspect | |||
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