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| Decision field | Open accessFabric Mass Unit ConverterGlobalRemove | Open accessFreeSewingGlobalRemove | Open accessTech Pack Definition, Contents & LimitsGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Choose materials | Find patterns & fit | Source production |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Materials | Patterns & fit | Production |
| Best for | Translating the same fabric mass-per-area result between metric and U.S. customary listings | Custom-fit home sewing patterns | Understanding what a tech pack must control before using a template or releasing work |
| 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. | 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 | Both | Makers | Apparel brands |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Software | Stitch Authority |
| Source type | Stitch Authority | Open-source project | Stitch Authority |
| 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. | 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 27, 2026 | Jul 21, 2026 | Jul 27, 2026 |
| Next review due | Jul 27, 2027 | Jan 17, 2027 | Jul 27, 2027 |
| Inspect | |||
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