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| Decision field | Open accessPattern Test Brief TemplateGlobalRemove | PaidPatternLab LondonGlobalRemove | Open accessSewing Length ConverterGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Find patterns & fit | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Patterns & fit |
| Best for | Planning a sewing, knitting, or crochet pattern test | Generating an editable custom-measurement block | Translating a length already stated by a pattern, controlled specification, sewing tool, or seam allowance |
| Know before using | The workflow is not a contract or quality certification; local legal duties and technical review may still apply. | A measurement-generated draft is a starting block, not independent evidence of body capture, comfort, mobility, balance, garment ease, or production fit. The result depends on measurement accuracy, supported ranges, formula assumptions, selected options, and output handling. Review the service's privacy terms before storing body data and sew a representative toile before design, grading, or production use. | This is a length-unit translation reference. It does not identify the measured feature; 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. |
| Practical access | |||
| For | Both | Both | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Paid | Open access |
| Format | Stitch Authority | Software | Stitch Authority |
| Source type | Stitch Authority | First-party platform | Stitch Authority |
| Source and review | |||
| What the source establishes | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | PatternLab London's current drafting page says a user creates a measurement profile, selects a basic block or sloper, adjusts fit, dart placement, length, seam allowance, and sleeve options, then downloads the generated result as tiled PDF, AI, or SVG. The live catalogue names bodice, dress, trouser, and stretch blocks and displays a price before purchase. | NIST states that 10 millimetres equal 1 centimetre and that one inch is exactly 25.4 millimetres. The tool uses those relationships, 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. |
| Linked page reviewed | Jul 15, 2026 | Jul 21, 2026 | Jul 30, 2026 |
| Next review due | Jul 15, 2027 | Jan 17, 2027 | Jul 30, 2027 |
| Inspect | |||
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