Use it for this.
Comparing an original and candidate yarn without treating the 0-7 category system, a familiar retail name, ply count, or WPI result as proof of interchangeability
What the source establishes.
The guide cites current Craft Yarn Council weight-system, FAQ, WPI, and hook-and-needle guidance plus current ASTM tex-designation and ISO yarn-linear-density sources; it distinguishes voluntary craft category, subjective screen, package quantity, measured property, finished gauge, and project decision.
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 record does not verify a yarn label, certify fibre or origin, provide a regional ply crosswalk, predict exact quantity or cost, approve care, establish allergy safety, or prove finished fit, wear, durability, availability, or project success.
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.
A record that can age in public.
New checks are appended rather than replacing earlier states. The latest source review is due by July 16, 2027.
- Baseline publishedInitial public evidence record established from the source check.
Source at this check: inspect recorded destination →
Terms attached to this record.
- yarn weight
- yarn substitution
- cyc yarn weight
- yarn category
- wraps per inch
- wpi
- yarn put up
- yarn linear density
- tex
- gauge swatch
- yarn quantity
- dye lot
- knitting yarn
- crochet yarn