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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Open accessSwatch-to-Area Yarn EstimatorGlobalRemove | Open accessTech Pack Definition, Contents & LimitsGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Choose materials | Source production |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Yarn | Yarn | Production |
| Best for | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Documenting a bounded sample-to-area yarn calculation when the equivalent area is already known and genuinely comparable with the sample | Understanding what a tech pack must control before using a template or releasing work |
| 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. | The worksheet does not establish that a sample represents a project, derive the area of shaped pieces, account for construction or openings, prescribe reserve, supply typical project quantities, round to packages, verify label values, guarantee required quantity, check dye-lot supply, or replace a tested pattern amount. Yarn, tool, maker, strand count, stitch or texture, density, treatment, finishing, planned area, and supply decisions remain project-specific. | An orientation rather than a completed product record; it does not supply a universal format, licensed standard content, measurements, tolerances, construction settings, labels, approvals, compliance conclusion, or product-release authority. |
| Practical access | |||
| For | Makers | Makers | Apparel brands |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Stitch Authority | Stitch Authority |
| Source type | Stitch Authority | Stitch Authority | Stitch Authority |
| 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. | The worksheet performs visible proportional arithmetic on user-entered sample dimensions, sample yarn length or weight-derived length, equivalent area, and optional reserve. Craft Yarn Council pattern-writing guidance says yarn amounts and package counts should be recorded in instructions, and its consumer guidance ties project instructions to a stated yarn amount and representative gauge; those sources do not establish a universal sample-to-area method, project range, or reserve. NIST defines 1 yard as exactly 0.9144 metre for the secondary unit display. | The guide cites published ISO sources for documented-information, garment-measurement, stitch, and seam boundaries plus current U.S. FTC textile and care-labeling guidance; it discloses that ISO 10013:2021's 2026 systematic review is at close-of-review stage and separates every cited authority from product-specific technical and market decisions. |
| Linked page reviewed | Jul 28, 2026 | Jul 28, 2026 | Jul 27, 2026 |
| Next review due | Jul 28, 2027 | Jul 28, 2027 | Jul 27, 2027 |
| Inspect | |||
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