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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Free + paidCommon ObjectiveGlobalRemove | Open accessSeam Allowance ConverterGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Source production | 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 | Finding sustainability-focused suppliers and guidance | Translating a seam allowance already stated by a pattern or controlled specification |
| 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 profile, match, uploaded credential, training credit, award, or platform ranking is not independent certification of a supplier or proof of current capability, performance, impact, capacity, or project fit. The platform's own ranking inputs and paid visibility affect discovery. Verify credentials with the issuer and check the legal entity, production site, claims, samples, references, terms, and compliance directly. | This is a unit-translation reference. It does not select, approve, or change a seam allowance; establish a universal fraction; interpret an unstated cutting or stitching line; or replace the exact pattern version, controlled specification, material and seam evidence, sample, production method, equipment, tolerance, or release authority. |
| Practical access | |||
| For | Makers | Apparel brands | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Free + paid | Open access |
| Format | Stitch Authority | Marketplace | Stitch Authority |
| Source type | Stitch Authority | Commercial marketplace | Stitch Authority |
| Account, payment, and exit | |||
| Access scope | Not yet reviewed at this level. | Fashion professional or supplier using content, profiles, connections, or a sourcing workflow. | Not yet reviewed at this level. |
| Before an account | Not yet reviewed at this level. | Public content and explanation pages are visible while signed out; profiles, personalized matches, saved items, and connections require signup. | Not yet reviewed at this level. |
| Free-account boundary | Not yet reviewed at this level. | A free account provides a personal or business profile, limited monthly connections, free content, and up to three portfolio items. | Not yet reviewed at this level. |
| Payment boundary | Not yet reviewed at this level. | PRO adds unlimited connections, paid content and training, more profile capacity, and business sourcing workflows. Monthly and annual routes use provider-set terms. | Not yet reviewed at this level. |
| Cancellation or exit | Not yet reviewed at this level. | Cancel in the account by selecting downgrade. A business profile returns to the free version and only its first three portfolio items remain visible. | Not yet reviewed at this level. |
| Saved work and data | Not yet reviewed at this level. | Profiles can contain files, work history, product galleries, and sustainability evidence. The current access and pricing pages do not establish full export or deletion; retain originals. | Not yet reviewed at this level. |
| 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. | Common Objective currently offers free individual and business profiles, personalised matches, supplier and content search, and limited monthly connection requests. Paid tiers unlock unlimited connections, additional content, training credits, and the CO Create sourcing workflow. Businesses enter their own profile information and upload certification or membership evidence; profile completeness, sustainability material, training credits, awards, and paid capabilities can influence visibility or ranking. | NIST states that one inch is exactly 25.4 millimetres, and the SI decimal relationship makes one centimetre equal to 10 millimetres. The tool uses those factors, displays rounded equivalents, exposes the size difference to the nearest 1/16 inch when converting to inches, and preserves valid value, source-unit, and target-unit state in the URL. |
| Linked page reviewed | Jul 28, 2026 | Jul 28, 2026 | Jul 28, 2026 |
| Next review due | Jul 28, 2027 | Jan 24, 2027 | Jul 28, 2027 |
| Inspect | |||
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