The Yarn StudioTool
Mystery yarn identifier
Lost the ball band? Answer a few questions about thickness, construction and feel, add a photo if you have one, and we'll estimate the weight category and fibre family — then match it to yarns in the library so you can find a substitute.
How thick is it?
The most reliable clue is wraps per inch: wind the yarn snugly (not stretched) around a ruler for one inch and count the wraps.
Step 1 of 5
New to weight categories? Read the yarn weight & gauge chart or the yarn substitution guide.
Related guides
- Project Yarn PicksBest yarn for every projectWhich yarn to use for sweaters, cardigans, blankets, scarves and amigurumi — fibres, weights, yardage and pitfalls.
- CrochetBest yarn for crochetWhich yarn to crochet with by project — blankets, amigurumi, garments and accessories — plus hook pairings and how much extra yarn crochet uses.
- CalculatorYarn weight & gauge calculatorEstimate gauge from a yarn weight and needle size, convert a swatch to stitches per 10 cm, or enter a pattern gauge and find yarns that match.