Use it for this.
Turning a known project length and candidate package size into a transparent buying estimate while keeping specimen, finished-fabric, care, and supply decisions separate
What the source establishes.
The planner performs visible arithmetic only on user-entered project length, reserve, package length, package mass, and price. Its connected source-reviewed guide cites the current Craft Yarn Council category, FAQ, WPI, and hook-and-needle guidance plus ASTM and ISO linear-density sources, and explicitly separates label comparison from substitution approval.
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 tool does not verify label values, convert between metres and yards, identify fibre or yarn diameter, assign a yarn-weight category, predict gauge or fabric, prescribe reserve, guarantee required quantity, check dye-lot supply, score candidates, or approve a substitution. A representative treated specimen and project-specific fabric, care, wear, comfort, supply, and quantity review remain required.
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 tool and evidence record established from the source-reviewed yarn substitution workflow.
Source at this check: inspect recorded destination → · review record ↗
Terms attached to this record.
- yarn substitution calculator
- yarn substitution planner
- how many skeins
- how many balls of yarn
- yarn yardage
- yarn meterage
- yarn length per 100g
- compare yarn labels
- candidate yarn
- gauge swatch
- dye lot