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| Decision field | Open accessKnitting Needle to Crochet Hook Size ChartGlobalRemove | Free accountWoolmark Learning CentreGlobalRemove | Free downloadSeamly2DGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Learn techniques | Learn techniques | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Yarn | Techniques & repair | Patterns & fit |
| Best for | Finding the current CYC hook and needle aliases that share one known nominal metric diameter before confirming project gauge | Structured wool education | Digital pattern drafting |
| 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. | This is Woolmark-operated education focused on wool, not a neutral comparison of all fibres or processing systems. A completion badge records coursework, not independent proof of production competence, product performance, environmental impact, or compliance. Confirm technical values and local requirements against current standards before production use. | Patternmaking knowledge, controlled measurement files, production conventions, and sewn fit testing are still required. The software does not validate body measurements, ease, balance, grading rules, fabric behavior, construction, or product fit. The project currently labels its user wiki manual as needing updates, so confirm current commands and file behavior against the installed release and active support channels. |
| Practical access | |||
| For | Makers | Both | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Free account | Free download |
| Format | Stitch Authority | Reference | Software |
| Source type | Stitch Authority | Industry organization | 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. | The current Woolmark Learning Centre library publishes free account-based coursework with module counts, completion times, progress tracking, knowledge checks, and supporting resources. Its wool programs cover fibre science, raw-wool and yarn processing, dyeing and finishing, woven textiles, knitwear, product quality, and wastewater management for learners and facilitators. | The maintained Seamly2D repository identifies the application as GPLv3+ open-source patternmaking software for Windows, macOS, and Linux. It reads multi-size measurement files for standardized sizes and individual measurement files for custom-fit work, publishes downloadable builds and releases, and links an active website and user forum. |
| Linked page reviewed | Jul 28, 2026 | Jul 28, 2026 | Jul 21, 2026 |
| Next review due | Jul 28, 2027 | Jan 24, 2027 | Jan 17, 2027 |
| Inspect | |||
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