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Decision fieldOpen accessFabric Mass Unit ConverterGlobalRemoveOpen accessPattern Test Brief TemplateGlobalRemoveFree + paidPattern TestersGlobalRemove
Decision fit
Primary jobChoose materialsFind patterns & fitFind patterns & fit
AreaMaterialsPatterns & fitPatterns & fit
Best forTranslating the same fabric mass-per-area result between metric and U.S. customary listingsPlanning a sewing, knitting, or crochet pattern testCoordinating an independent sewing-pattern test
Know before usingThe 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.The workflow is not a contract or quality certification; local legal duties and technical review may still apply.The interface and plan description do not prove tester reach, completion, feedback quality, fit validity, export quality, uptime, support, or suitability for an established release process. Measurements and photos can be sensitive personal data. Run a non-critical pilot, review the current privacy and service terms, define consent and photo rights, test exports and deletion, and keep pattern approval and release responsibility with the designer.
Practical access
ForBothBothApparel brands
Location or jurisdictionGlobalGlobalGlobal
AccessOpen accessOpen accessFree + paid
FormatStitch AuthorityStitch AuthoritySoftware
Source typeStitch AuthorityStitch AuthorityFirst-party platform
Source and review
What the source establishesThe 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 linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface.Pattern Testers currently offers application intake, tester selection, feedback, photos, approvals, issue tracking, revisions, a reusable tester directory, and release deadlines. The public pricing page shows a limited free plan and paid Pro and Business tiers. Its June 2026 privacy policy lists names, email addresses, measurements, photos, feedback, application history, and assignments among the data processed.
Linked page reviewedJul 16, 2026Jul 15, 2026Jul 21, 2026
Next review dueJul 16, 2027Jul 15, 2027Jan 17, 2027
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