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| Decision field | Open accessSeam Allowance ConverterGlobalRemove | Free accountWoolmark Learning CentreGlobalRemove | Open accessKnittyGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Learn techniques | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Techniques & repair | Yarn |
| Best for | Translating a seam allowance already stated by a pattern or controlled specification | Structured wool education | Free editorial knitting patterns and techniques |
| Know before using | 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. | 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. | Free access does not grant commercial reproduction or sale rights; uses beyond one personal copy must be resolved with the designer or author. Knitty says it tries to avoid errors but disclaims responsibility for pattern and technique inaccuracies. Check the live page for corrections, verify gauge and measurements, and confirm permission before any commercial use. |
| Practical access | |||
| For | Both | Both | Makers |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Free account | Open access |
| Format | Stitch Authority | Reference | Reference |
| Source type | Stitch Authority | Industry organization | First-party platform |
| Source and review | |||
| What the source establishes | 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. | 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. | Knitty currently publishes web-only editorial issues containing original knitting and crochet patterns and articles. Its legal page states that patterns are free for one person's personal use, identifies each designer or author as the copyright holder, and explains that verified pattern corrections are posted in bright pink on the pattern page. |
| 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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