Best for
Documenting a bounded sample-to-area yarn calculation when the equivalent area is already known and genuinely comparable with the sample
What the source establishes
The worksheet performs visible proportional arithmetic on user-entered sample dimensions, sample yarn length or weight-derived length, equivalent area, and optional reserve. Craft Yarn Council pattern-writing guidance says yarn amounts and package counts should be recorded in instructions, and its consumer guidance ties project instructions to a stated yarn amount and representative gauge; those sources do not establish a universal sample-to-area method, project range, or reserve. NIST defines 1 yard as exactly 0.9144 metre for the secondary unit display.
The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface.
What this record does not prove
The worksheet does not establish that a sample represents a project, derive the area of shaped pieces, account for construction or openings, prescribe reserve, supply typical project quantities, round to packages, verify label values, guarantee required quantity, check dye-lot supply, or replace a tested pattern amount. Yarn, tool, maker, strand count, stitch or texture, density, treatment, finishing, planned area, and supply decisions remain project-specific.
A reachable official source can verify identity, stated scope, and access. It cannot silently become an audit of workmanship, delivery, labor conditions, or suitability for your project.
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Answer about this Stitch Authority page—not the external organization or provider. No name, free text, account, or session ID is sent.
Responses are anonymous interaction counts. They are not unique-user totals, participant validation, or evidence about provider quality.
Review history
New checks are appended rather than replacing earlier entries. The next review is due by July 28, 2027.
- Baseline publishedEstablished the public evidence record after removing preset project dimensions, a fixed reserve, unsupported typical project ranges, and shaped-project certainty from the estimator.
Source at this check: inspect recorded destination → · review record ↗
Search terms
- yarn yardage calculator
- yarn estimator
- how much yarn do I need
- swatch yarn calculator
- sample scaling
- equivalent area
- yarn metres
- yarn yards
- gauge swatch
- reserve
- knitting
- crochet