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| Decision field | Open accessFabric Mass Unit ConverterGlobalRemove | Open accessFreeSewingGlobalRemove | Open accessKnittyGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Choose materials | Find patterns & fit | Find patterns & fit |
| Area | Materials | Patterns & fit | Yarn |
| Best for | Translating the same fabric mass-per-area result between metric and U.S. customary listings | Custom-fit home sewing patterns | Free editorial knitting patterns and techniques |
| 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. | A generated pattern is not independent fit evidence or a production-ready graded block. The result still depends on accurate measurements, the selected design and options, ease assumptions, fabric behavior, construction, and representative test garments. An account stores saved patterns and measurement sets, so review the platform's privacy terms before retaining personal measurements. | 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 | Makers | Makers |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Software | Reference |
| Source type | Stitch Authority | Open-source project | First-party platform |
| 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. | FreeSewing's official documentation says the browser editor drafts a selected design in real time from a measurement set rather than scaling or grading a standard-size pattern. Users can adjust design options and export the generated result, including as PDF; saving the pattern to an account is optional and is used to revisit it later. | 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 16, 2026 | Jul 21, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jan 17, 2027 | Jan 17, 2027 |
| Inspect | |||
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