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| Decision field | Open accessSeam Allowance ConverterGlobalRemove | Free downloadIndia Basic Pattern Development TextbookIndia · South AsiaRemove | Open accessFreeSewingGlobalRemove | Free accountSwatchOnGlobalRemove |
|---|---|---|---|---|
| Decision fit | ||||
| Primary job | Find patterns & fit | Find patterns & fit | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Patterns & fit | Materials |
| Best for | Translating a seam allowance already stated by a pattern or controlled specification | Following a structured classroom introduction to womenswear block development, muslin test fitting, fit correction, and basic flat-pattern manipulation | Custom-fit home sewing patterns | Sourcing swatches and low-MOQ fabric options |
| Know before using | This is a unit-translation reference. It does not select, approve, or change a seam allowance; establish a universal fraction; interpret an unstated cutting or stitching line; or replace the exact pattern version, controlled specification, material and seam evidence, sample, production method, equipment, tolerance, or release authority. | This is a classroom textbook with particular womenswear exercises, charts, figures, terminology, units, and drafting methods. It is not a universal body, block, grading, or sizing system; current industry certification; or proof of fit for an individual wearer or product. Some content and examples predate the current review. Verify the intended body data, measurement protocol, ease, material, seam and construction rules, accessibility, current curriculum status, and representative sewn fit independently. | 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. | SwatchOn's supplier status, counts, and trust language describe its own marketplace and can change. They do not independently establish fibre identity, performance, certification validity, mill ownership, production capacity, colour continuity, delivery, duty, or commercial fit. Review samples, test data, current certificates, the contracting entity, order terms, and landed logistics before purchase. |
| Practical access | ||||
| For | Both | Both | Makers | Apparel brands |
| Location or jurisdiction | Global | India · South Asia | Global | Global |
| Access | Open access | Free download | Open access | Free account |
| Format | Stitch Authority | Reference | Software | Marketplace |
| Source type | Stitch Authority | Government guidance | Open-source project | Commercial marketplace |
| Source and review | ||||
| What the source establishes | NIST states that one inch is exactly 25.4 millimetres, and the SI decimal relationship makes one centimetre equal to 10 millimetres. The tool uses those factors, displays rounded equivalents, exposes the size difference to the nearest 1/16 inch when converting to inches, and preserves valid value, source-unit, and target-unit state in the URL. | CBSE's official publication index links the Class XII Fashion Studies textbook. Its Basic Pattern Development chapter covers body and dress-form measurement, size relationships, patternmaking tools and terms, fit and balance, muslin test fitting, block correction, bodice, sleeve and skirt blocks, seam allowances, grain lines, notches, necklines, collars, and dart manipulation. The stated learning outcomes include developing blocks from charts and body measurements, testing fit, correcting the pattern, and developing simple designs from basic blocks. | 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. | SwatchOn's current marketplace page exposes fabrics, trims, and prints, with swatch samples, in-stock catalogue colours, low-order-quantity options, and global logistics support. The page publishes operator-supplied marketplace and supplier counts and labels participating suppliers as verified partners. |
| Linked page reviewed | Jul 28, 2026 | Jul 16, 2026 | Jul 21, 2026 | Jul 28, 2026 |
| Next review due | Jul 28, 2027 | Oct 14, 2026 | Jan 17, 2027 | Jan 24, 2027 |
| Inspect | ||||
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