Yarn Weight Conversion

Convert wraps per inch (WPI) to yarn weight category and get recommended gauge range and needle size.

Wraps per Inch (WPI)

Yarn Weight Category

Tab to move between fields

Detected Yarn Weight

Gauge Range (min)20 sts/4in

Gauge Range (max)22 sts/4in

Needle Size (min)3.75 mm

Needle Size (max)4.5 mm

How to Use This Calculator

Enter the weight of yarn you have available in grams.
Input the yardage per skein (from the ball band) to determine yards per gram.
Enter the yardage per gram of the substitute yarn.
Review the converted skein count and total grams needed for the substitute.
Purchase the substitute yarn in the calculated quantity, rounding up to whole skeins.

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Related Calculators

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