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Side-by-side evidence and decision metadata for selected textile resources.
Decision fieldOpen accessFabric Mass Unit ConverterGlobalRemoveFree + paidThreadloop Sewing Pattern DatabaseGlobalRemoveFree accountRibblrGlobalRemoveOpen accessFreeSewingGlobalRemove
Decision fit
Primary jobChoose materialsFind patterns & fitFind patterns & fitFind patterns & fit
Also useful forNo additional job recordedNo additional job recordedNo additional job recordedNo additional job recorded
AreaMaterialsPatterns & fitPatterns & fitPatterns & fit
Best forTranslating the same fabric mass-per-area result between metric and U.S. customary listingsSearching current and out-of-print sewing patternsFollowing interactive patterns with progress toolsCustom-fit home sewing patterns
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.Community members add and quality-control the records, so confirm sizing, measurements, fabric suggestions, format, availability, errata, license, and purchase terms with the designer or publisher. Adding an entry to a stash does not provide the pattern files. Saved searches and private PDF storage are paid Plus features, and a listing or review does not establish pattern accuracy or fit.Ribblr supplies the reading and publishing format, but each designer remains responsible for the pattern's math, sizing, instructions, testing, corrections, licence, and support. Interactive conveniences do not prove fit or technical accuracy. Pattern prices and available features vary, and following an ePattern depends on an account and continued platform access.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.
Practical access
ForBothMakersMakersMakers
Location or jurisdictionGlobalGlobalGlobalGlobal
AccessOpen accessFree + paidFree accountOpen access
FormatStitch AuthorityCommunityMarketplaceSoftware
Source typeStitch AuthorityCommunity databaseCommercial marketplaceOpen-source project
Account, payment, and exit
Access scopeNot yet reviewed at this level.Sewer searching pattern records or organizing patterns, projects, fabric, notions, and private files.Not yet reviewed at this level.Not yet reviewed at this level.
Before an accountNot yet reviewed at this level.Browse the pattern database, guide, designers, publications, and public community areas without creating an account.Not yet reviewed at this level.Not yet reviewed at this level.
Free-account boundaryNot yet reviewed at this level.A free account needs no card and supports a stash, wishlist, projects, reviews, and personal organization.Not yet reviewed at this level.Not yet reviewed at this level.
Payment boundaryNot yet reviewed at this level.Plus adds PDF pattern storage, collections, saved searches, bulk editing, and other workflow features on monthly or annual billing.Not yet reviewed at this level.Not yet reviewed at this level.
Cancellation or exitNot yet reviewed at this level.Cancel through an in-account link. Paid features remain through the current billing cycle, then the account returns to free features.Not yet reviewed at this level.Not yet reviewed at this level.
Saved work and dataNot yet reviewed at this level.The terms say submitted materials remain yours, but the checked public pages do not explain a full export or how stored PDFs behave after downgrade. Keep originals outside the platform.Not yet reviewed at this level.Not yet reviewed at this level.
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.Threadloop's official guide describes an independent, fully crowdsourced database covering available and out-of-print sewing patterns. Its search supports pattern type, fabric type, age group, body type, cup size, level, format, file features, language, measurements, availability, and other filters; members can also track a stash, wishlist, projects, reviews, and discussions. Current terms state that the free plan requires no card, paid upgrades start billing immediately, cancellation retains paid features through the current cycle, and the account then returns to free features.Ribblr's current ePattern manual documents line-by-line progress tracking, size-specific instructions, interactive charts, counters, attached media, stitch tutorials, unit handling, and left-hand display options. Its Ribbuild guidance says designers can create and test interactive crochet, knitting, and sewing patterns inside the platform.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.
Linked page reviewedJul 27, 2026Jul 28, 2026Jul 21, 2026Jul 21, 2026
Next review dueJul 27, 2027Jan 24, 2027Jan 17, 2027Jan 17, 2027
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