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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Open accessWRAP Certified FacilitiesGlobalRemove | Open accessFreeSewingGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Check standards | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Yarn | Production | Patterns & fit |
| Best for | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Checking a named facility's current WRAP certification or discovering listed production units | Custom-fit home sewing patterns |
| 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. | A listed facility and its certification status do not establish product quality, capacity, availability, upstream coverage, whole-chain performance, buyer fit, or the scope and result of a particular order. Confirm the exact legal entity and production unit, current certificate and scope, product and process capability, capacity, monitoring evidence, corrective actions, references, and commercial terms directly. | 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. |
| Practical access | |||
| For | Makers | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Directory | Software |
| Source type | Stitch Authority | Official registry | Open-source project |
| 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. | WRAP states that thousands of WRAP-certified facilities operate worldwide and that buyers can use the public route to verify a named factory's certification or find certified manufacturers for apparel, footwear, sewn and leather goods, textiles, and related products. The page exposes certified facilities and monitoring firms as separate routes. | 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. |
| Linked page reviewed | Jul 28, 2026 | Jul 28, 2026 | Jul 21, 2026 |
| Next review due | Jul 28, 2027 | Oct 26, 2026 | Jan 17, 2027 |
| Inspect | |||
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