WPI

Wraps per inch

A way of measuring the thickness of your yarn. To measure WPI, wrap the yarn around a ruler until the wraps cover one inch of the ruler. Count how many wraps fit into one inch.

Yarn weight as measured by WPI

Yarn Weight WPI
Lace 30-40+
Super Fine 14-30
Fine 12-18
Light 11-15
Medium 9-12
Bulky 6-9
Super-Bulky 5-6
Jumbo 1-4

More information:

Scroll to Top

Get Free Access to the 10-Video Course that Will Change the Way You Knit

Avoid Common Mistakes
Tackle New Projects
Knit With Confidence

6c2b5b30 top 10 mistakes free ebook cover 3d 4 30 21 transparent background full res sm 10j30eb0c70e7035004028