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| Decision field | Open accessFabric Mass Unit ConverterGlobalRemove | Open accessCraft Yarn Council StandardsUnited States · North AmericaRemove |
|---|---|---|
| Decision fit | ||
| Primary job | Choose materials | Check standards |
| Area | Materials | Standards |
| Best for | Translating the same fabric mass-per-area result between metric and U.S. customary listings | Resolving yarn and pattern terminology |
| Know before using | The result is a numerical unit conversion, not a new measurement or conformance decision; it does not establish sample or lot representativeness, significant digits, drape, warmth, opacity, thickness, stretch, strength, shrinkage, durability, sewability, end use, target, or tolerance. | These are voluntary industry guidelines, not law, a licensed test method, or proof that a yarn, hook, needle, pattern, size, or care instruction suits a project. Publishers, manufacturers, and regions may use different names, aliases, chart symbols, size tables, and weight systems. Confirm the actual pattern key, measured tool diameter, yarn label and specifications, body or garment measurements, gauge, care evidence, and destination-market requirements. |
| Practical access | ||
| For | Both | Both |
| Location or jurisdiction | Global | United States · North America |
| Access | Open access | Open access |
| Format | Stitch Authority | Reference |
| Source type | Stitch Authority | Industry organization |
| Source and review | ||
| What the source establishes | The calculator uses the NIST SP 811 Appendix B.8 conversion from avoirdupois ounces per square yard to kilograms per square metre and links to a source-reviewed fabric mass record for method, sampling, conditioning, and product controls. | The Craft Yarn Council's current gateway publishes its yarn-weight system, crochet and knitting chart symbols and abbreviations, project levels, body-size tables, hook and needle aliases, care symbols, designer guidance, downloadable symbols, and a guideline PDF. The Council says yarn companies, tool manufacturers, publishers, and consultants developed the guidance to improve consistency in labels and patterns and asks industry participants to adopt it. |
| Linked page reviewed | Jul 16, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Oct 19, 2026 |
| Inspect | ||
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